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305
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8394
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277
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Updated ~10 hr(s) ago.
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Taxonomic
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Observations - Last seen - Sorted by Date descending
Sort by Taxonomic order
Species Name
Sort by Count
Count
Sort by Date
Date
Observer
Location
species
1.
Sabine's Gull
Count
#
1
22 Sep 2023
David Waltman
Baseline Reservoir
species
2.
Common Merganser
Count
#
4
22 Sep 2023
Patricia Cullen
Baseline Reservoir
species
3.
Ring-billed Gull
Count
#
7
22 Sep 2023
Patricia Cullen
Baseline Reservoir
species
4.
Double-crested Cormorant
Count
#
18
22 Sep 2023
Patricia Cullen
Baseline Reservoir
species
5.
Snowy Egret
Count
#
1
22 Sep 2023
Patricia Cullen
Baseline Reservoir
species
6.
Eurasian Collared-Dove
Exotic: Naturalized
Count
#
2
22 Sep 2023
Leanne Presley
Rock Rose
species
7.
Blue Jay
Count
#
3
22 Sep 2023
Leanne Presley
Rock Rose
species
8.
Black-capped Chickadee
Count
#
3
22 Sep 2023
Leanne Presley
Rock Rose
species
9.
Red-breasted Nuthatch
Count
#
3
22 Sep 2023
Leanne Presley
Rock Rose
species
10.
House Finch
Count
#
2
22 Sep 2023
Leanne Presley
Rock Rose
species
11.
American White Pelican
Count
#
4
22 Sep 2023
Cynthia Damon
Boulder Reservoir, Boulder US-CO 40.07135, -105.23184
species
12.
Pied-billed Grebe
Count
#
1
22 Sep 2023
John Salisbury
Baseline Reservoir
species
13.
American Coot
Count
#
18
22 Sep 2023
John Salisbury
Baseline Reservoir
species
14.
Turkey Vulture
Count
#
1
22 Sep 2023
Thomas Heinrich
Baseline Reservoir
species
15.
Bald Eagle
Count
#
1
22 Sep 2023
Thomas Heinrich
Baseline Reservoir
species
16.
Red-tailed Hawk
Count
#
3
22 Sep 2023
Thomas Heinrich
Baseline Reservoir
species
17.
Song Sparrow
Count
#
5
22 Sep 2023
Daisy Raymondson
Home
species
18.
Lesser Goldfinch
Count
#
2
22 Sep 2023
Tom Crock
Boulder Mountain Park, Boulder US-CO 40.00441, -105.30582
species
19.
Blue-winged Teal
Count
#
5
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Swede Lakes
species
20.
Cinnamon Teal
Count
#
1
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Swede Lakes
species
21.
American Wigeon
Count
#
11
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Swede Lakes
species
22.
Mallard
Count
#
10
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Swede Lakes
species
23.
Green-winged Teal
Count
#
2
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Swede Lakes
species
24.
Rock Pigeon
Exotic: Naturalized
Count
#
3
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Swede Lakes
species
25.
California Gull
Count
#
1
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Swede Lakes
species
26.
Northern Flicker
Count
#
3
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Swede Lakes
species
27.
European Starling
Exotic: Naturalized
Count
#
25
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Swede Lakes
species
28.
American Goldfinch
Count
#
1
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Swede Lakes
species
29.
Red-winged Blackbird
Count
#
18
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Swede Lakes
species
30.
Common Grackle
Count
#
2
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Swede Lakes
species
31.
Barn Swallow
Count
#
3
22 Sep 2023
Kieran Schnitzspahn
Fairview High School
species
32.
Northern Shoveler
Count
#
6
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Lagerman Reservoir
species
33.
Gadwall
Count
#
2
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Lagerman Reservoir
species
34.
Northern Pintail
Count
#
1
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Lagerman Reservoir
species
35.
Ruddy Duck
Count
#
16
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Lagerman Reservoir
species
36.
Eared Grebe
Count
#
3
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Lagerman Reservoir
species
37.
Mourning Dove
Count
#
1
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Lagerman Reservoir
species
38.
American Avocet
Count
#
2
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Lagerman Reservoir
species
39.
Killdeer
Count
#
33
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Lagerman Reservoir
species
40.
Wilson's Snipe
Count
#
3
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Lagerman Reservoir
species
41.
Solitary Sandpiper
Count
#
1
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Lagerman Reservoir
species
42.
Greater Yellowlegs
Count
#
2
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Lagerman Reservoir
species
43.
Lesser Yellowlegs
Count
#
5
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Lagerman Reservoir
species
44.
Chipping Sparrow
Count
#
1
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Lagerman Reservoir
species
45.
Vesper Sparrow
Count
#
1
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Lagerman Reservoir
species
46.
Savannah Sparrow
Count
#
2
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Lagerman Reservoir
species
47.
Western Meadowlark
Count
#
3
22 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Lagerman Reservoir
species
48.
Herring Gull
Count
#
1
22 Sep 2023
Daniel Gelbart
Baseline Reservoir
species
49.
Canada Goose
Count
#
10
22 Sep 2023
Dani Quarrella
Left Hand Creek at Pike Rd
species
50.
Wood Duck
Count
#
2
22 Sep 2023
Randall Siebert
Waneka Lake/Greenlee Preserve--Greenlee Only
species
51.
Sora
Count
#
1
22 Sep 2023
Randall Siebert
Waneka Lake/Greenlee Preserve--Greenlee Only
species
52.
Downy Woodpecker
Count
#
1
22 Sep 2023
Randall Siebert
Waneka Lake/Greenlee Preserve--Greenlee Only
species
53.
Black-billed Magpie
Count
#
2
22 Sep 2023
Randall Siebert
Waneka Lake/Greenlee Preserve--Greenlee Only
species
54.
White-breasted Nuthatch
Count
#
1
22 Sep 2023
Randall Siebert
Waneka Lake/Greenlee Preserve--Greenlee Only
species
55.
House Sparrow
Exotic: Naturalized
Count
#
3
22 Sep 2023
Randall Siebert
Waneka Lake/Greenlee Preserve--Greenlee Only
species
56.
Black-chinned Hummingbird
Count
#
1
22 Sep 2023
Christian Nunes
Boulder Creek--75th St.
species
57.
Broad-tailed Hummingbird
Count
#
3
22 Sep 2023
william miller
Olde Stage Rd--Red Hill Rd to Lefthand Canyon Dr
species
58.
Belted Kingfisher
Count
#
1
22 Sep 2023
Christian Nunes
Boulder Creek--75th St.
species
59.
Red-naped Sapsucker
Count
#
1
22 Sep 2023
william miller
Olde Stage Rd--Red Hill Rd to Lefthand Canyon Dr
species
60.
Say's Phoebe
Count
#
1
22 Sep 2023
Christian Nunes
Boulder Creek--75th St.
species
61.
Steller's Jay
Count
#
6
22 Sep 2023
william miller
Olde Stage Rd--Red Hill Rd to Lefthand Canyon Dr
species
62.
American Robin
Count
#
1
22 Sep 2023
william miller
Olde Stage Rd--Red Hill Rd to Lefthand Canyon Dr
species
63.
Clay-colored Sparrow
Count
#
1
22 Sep 2023
Christian Nunes
Boulder Creek--75th St.
species
64.
Spotted Towhee
Count
#
2
22 Sep 2023
william miller
Olde Stage Rd--Red Hill Rd to Lefthand Canyon Dr
species
65.
Brewer's Blackbird
Count
#
1
22 Sep 2023
Christian Nunes
Boulder Creek--75th St.
species
66.
Common Yellowthroat
Count
#
1
22 Sep 2023
Christian Nunes
Boulder Creek--75th St.
species
67.
Great Blue Heron
Count
#
1
22 Sep 2023
art reisman
White Rocks Trail area
species
68.
Ferruginous Hawk
Count
#
1
22 Sep 2023
art reisman
White Rocks Trail area
Show Details
Comments
Photos
species
69.
American Kestrel
Count
#
1
22 Sep 2023
art reisman
White Rocks Trail area
species
70.
White-crowned Sparrow
Count
#
2
22 Sep 2023
art reisman
White Rocks Trail area
species
71.
Orange-crowned Warbler
Count
#
2
22 Sep 2023
art reisman
White Rocks Trail area
species
72.
Yellow-rumped Warbler
Count
#
2
22 Sep 2023
art reisman
White Rocks Trail area
species
73.
Woodhouse's Scrub-Jay
Count
#
2
22 Sep 2023
Carrie Vaughn
Hall Ranch--South
species
74.
Clark's Nutcracker
Count
#
4
22 Sep 2023
Carrie Vaughn
Hall Ranch--South
species
75.
American Crow
Count
#
1
22 Sep 2023
Carrie Vaughn
Hall Ranch--South
species
76.
Townsend's Solitaire
Count
#
2
22 Sep 2023
Carrie Vaughn
Hall Ranch--South
species
77.
Dusky Flycatcher
Count
#
1
22 Sep 2023
Daniel Gelbart
Valmont Overlook (Legion Park)
species
78.
Swainson's Hawk
Count
#
1
22 Sep 2023
Randall Siebert
Waneka Lake/Greenlee Preserve--Waneka Lake only
species
79.
Common Raven
Count
#
2
22 Sep 2023
A J
Horsetooth Peak Trail, Allenspark, Colorado, US (40.239, -105.553)
species
80.
Mountain Chickadee
Count
#
1
22 Sep 2023
A J
Horsetooth Peak Trail, Allenspark, Colorado, US (40.239, -105.553)
species
81.
Red Crossbill
Count
#
1
22 Sep 2023
Neil Brown
Ruby's Retreat, Lyons Colorado, US (40.192, -105.488)
species
82.
Dark-eyed Junco
Count
#
4
22 Sep 2023
Neil Brown
Ruby's Retreat, Lyons Colorado, US (40.192, -105.488)
species
83.
Williamson's Sapsucker
Count
#
1
22 Sep 2023
Patrick Morgan
Reynolds Ranch (no public access)
species
84.
Hairy Woodpecker
Count
#
1
22 Sep 2023
Patrick Morgan
Reynolds Ranch (no public access)
species
85.
Ruby-crowned Kinglet
Count
#
3
22 Sep 2023
Patrick Morgan
Reynolds Ranch (no public access)
species
86.
Brown Creeper
Count
#
1
22 Sep 2023
Patrick Morgan
Reynolds Ranch (no public access)
species
87.
Green-tailed Towhee
Count
#
1
22 Sep 2023
Patrick Morgan
Reynolds Ranch (no public access)
species
88.
Gray Catbird
Count
#
1
22 Sep 2023
Pamela Eaton
80305, Boulder US-CO (39.9758,-105.2762)
species
89.
Cedar Waxwing
Count
#
2
22 Sep 2023
Pamela Eaton
80305, Boulder US-CO (39.9758,-105.2762)
species
90.
Great Egret
Count
#
1
22 Sep 2023
John Salisbury
Walden Ponds Wildlife Habitat--Walden & Sawhill Ponds all together
species
91.
Osprey
Count
#
1
22 Sep 2023
John Salisbury
Walden Ponds Wildlife Habitat--Walden & Sawhill Ponds all together
species
92.
Redhead
Count
#
19
22 Sep 2023
Robert King
Lagerman Agricultural Preserve--Lagerman Reservoir
species
93.
Ring-necked Duck
Count
#
2
22 Sep 2023
Robert King
Lagerman Agricultural Preserve--Lagerman Reservoir
species
94.
Lesser Scaup
Count
#
1
22 Sep 2023
Robert King
Lagerman Agricultural Preserve--Lagerman Reservoir
species
95.
Yellow-headed Blackbird
Count
#
1
22 Sep 2023
Robert King
Lagerman Agricultural Preserve--Lagerman Reservoir
species
96.
Cooper's Hawk
Count
#
1
22 Sep 2023
Eve Lempriere
Niwot Loop Trail
species
97.
Canada Jay
Count
#
1
22 Sep 2023
Alan Brelsford
Magnolia Road, Nederland, Colorado, US (39.961, -105.443)
species
98.
Pygmy Nuthatch
Count
#
4
22 Sep 2023
Alan Brelsford
Magnolia Road, Nederland, Colorado, US (39.961, -105.443)
species
99.
Hooded Merganser
Count
#
1
22 Sep 2023
Patricia Cullen
Lagerman Agricultural Preserve--Lagerman Reservoir
species
100.
Horned Lark
Count
#
2
22 Sep 2023
Patricia Cullen
Lagerman Agricultural Preserve--Lagerman Reservoir
species
101.
Brewer's Sparrow
Count
#
1
22 Sep 2023
Jim Ward
Hecla Lake
species
102.
Sharp-shinned Hawk
Count
#
1
22 Sep 2023
Thomas Heinrich
3rd & Forest
species
103.
Pinyon Jay
Count
#
1
22 Sep 2023
Thomas Heinrich
3rd & Forest
Show Details
Comments
species
104.
House Wren
Count
#
2
22 Sep 2023
Thomas Heinrich
3rd & Forest
Show Details
Comments
species
105.
Wilson's Warbler
Count
#
1
22 Sep 2023
Thomas Heinrich
3rd & Forest
species
106.
Great Horned Owl
Count
#
1
21 Sep 2023
Eric Walters
CO Longmont
Show Details
Comments
species
107.
Tree Swallow
Count
#
1
21 Sep 2023
Jeffrey Price
Waneka Lake/Greenlee Preserve
species
108.
Marsh Wren
Count
#
1
21 Sep 2023
Jacob Hall
Boulder Creek--61st St.
species
109.
Lark Sparrow
Count
#
1
21 Sep 2023
Scott Dieni
Sombrero Marsh & Pond
species
110.
American Dipper
Count
#
1
21 Sep 2023
Scott Brown
Boulder Creek--University of Colorado campus
species
111.
Indigo Bunting
Count
#
1
21 Sep 2023
Richard Trinkner
Boulder Community Garden
Show Details
Comments
Photos
species
112.
Golden-crowned Kinglet
Count
#
1
21 Sep 2023
Paraksh Vankawala
Long Lake & Lake Isabelle Trail
species
113.
Pine Grosbeak
Count
#
1
21 Sep 2023
Paraksh Vankawala
Long Lake & Lake Isabelle Trail
species
114.
Least Sandpiper
Count
#
2
21 Sep 2023
Donna Stumpp
Little Gaynor Lake
species
115.
Pectoral Sandpiper
Count
#
1
21 Sep 2023
Donna Stumpp
Little Gaynor Lake
Show Details
Comments
species
116.
Semipalmated Sandpiper
Count
#
1
21 Sep 2023
Donna Stumpp
Little Gaynor Lake
Show Details
Comments
species
117.
Spotted Sandpiper
Count
#
2
21 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Lagerman Reservoir
species
118.
Golden Eagle
Count
#
1
21 Sep 2023
Sue Riffe
Lagerman Agricultural Preserve--Lagerman Reservoir
species
119.
Blue-gray Gnatcatcher
Count
#
1
21 Sep 2023
Norman Erthal
Hawthorn Gulch
species
120.
Blue Grosbeak
Count
#
1
21 Sep 2023
Tom Crock
Walden Ponds Wildlife Habitat--Cottonwood Marsh/Wally Tove's Pond/Duck Pond
species
121.
Wild Turkey
Count
#
4
21 Sep 2023
Kevin Rutherford
Old Saint Vrain Rd
species
122.
Canyon Wren
Count
#
1
21 Sep 2023
Kevin Rutherford
Old Saint Vrain Rd
species
123.
Lincoln's Sparrow
Count
#
2
21 Sep 2023
Kevin Rutherford
Old Saint Vrain Rd
species
124.
Sage Thrasher
Count
#
1
21 Sep 2023
Charles Hundertmark
Heil Ranch--Picture Rock Trail
species
125.
Cassin's Kingbird
Count
#
1
21 Sep 2023
Thomas Heinrich
3rd & Forest
species
126.
Black-headed Grosbeak
Count
#
1
21 Sep 2023
Thomas Heinrich
3rd & Forest
Show Details
Comments
species
127.
Peregrine Falcon
Count
#
1
21 Sep 2023
Jim Ward
White Rocks Trail area
Show Details
Comments
Photos
species
128.
Chimney Swift
Count
#
1
21 Sep 2023
John Salisbury
Pella Crossing Open Space
species
129.
Black-crowned Night-Heron
Count
#
1
21 Sep 2023
Todd Dowling
Walden Ponds Wildlife Habitat--Walden & Sawhill Ponds all together
species
130.
Brown Thrasher
Count
#
1
21 Sep 2023
Todd Dowling
Walden Ponds Wildlife Habitat--Walden & Sawhill Ponds all together
Show Details
Comments
species
131.
Western Tanager
Count
#
1
21 Sep 2023
Todd Dowling
Walden Ponds Wildlife Habitat--Walden & Sawhill Ponds all together
species
132.
Western Wood-Pewee
Count
#
1
20 Sep 2023
Ernest Crvich
Pleasant View Marsh
species
133.
Common Poorwill
Count
#
1
20 Sep 2023
Sue Riffe
96 Antelope Dr, Lyons (Boulder Cty, CO)
Show Details
Comments
species
134.
Lazuli Bunting
Count
#
3
20 Sep 2023
Sue Riffe
96 Antelope Dr, Lyons (Boulder Cty, CO)
species
135.
Pine Siskin
Count
#
6
20 Sep 2023
Pamela S
Riverside
species
136.
Bushtit
Count
#
1
20 Sep 2023
Benjamin Brown-Steiner
Hayden Lake
species
137.
Prairie Falcon
Count
#
1
20 Sep 2023
art reisman
Mayhoffer Singletree Trail
species
138.
Cassin's Finch
Count
#
5
20 Sep 2023
Neil Brown
Roosevelt NF - Taylor Mountain Area
species
139.
Horned Grebe
Count
#
2
20 Sep 2023
Nancy Ries Morrison
Lagerman Agricultural Preserve--Lagerman Reservoir
Show Details
Comments
Photos
species
140.
White-faced Ibis
Count
#
1
20 Sep 2023
Nancy Ries Morrison
Lagerman Agricultural Preserve--Lagerman Reservoir
Show Details
Comments
Photos
species
141.
American Pipit
Count
#
1
20 Sep 2023
Joo Tan
Heil Valley Ranch
Show Details
Comments
species
142.
Canvasback
Count
#
2
20 Sep 2023
Jason Barcus
Lagerman Agricultural Preserve--Lagerman Reservoir
Show Details
Comments
species
143.
Bufflehead
Count
#
2
20 Sep 2023
Jason Barcus
Lagerman Agricultural Preserve--Lagerman Reservoir
Show Details
Comments
species
144.
Common Goldeneye
Count
#
1
20 Sep 2023
Jason Barcus
Lagerman Agricultural Preserve--Lagerman Reservoir
Show Details
Comments
species
145.
Lark Bunting
Count
#
1
20 Sep 2023
Jason Barcus
Lagerman Agricultural Preserve--Lagerman Reservoir
species
146.
Plumbeous Vireo
Count
#
2
19 Sep 2023
Christian Nunes
Eldorado Mountain Open Space--Goshawk Ridge Trail
species
147.
Rufous Hummingbird
Count
#
1
19 Sep 2023
David Waltman
Crestview 8464 W Fork Rd (private residence)
Show Details
Comments
species
148.
Yellow Warbler
Count
#
1
19 Sep 2023
Darcy Juday
Pella Crossing Open Space
species
149.
Broad-winged Hawk
Count
#
1
19 Sep 2023
Thomas Heinrich
Pleasant View Marsh
Show Details
Comments
Photos
species
150.
Stilt Sandpiper
Count
#
1
19 Sep 2023
Valentina Roumi
Little Gaynor Lake
species
151.
Wilson's Phalarope
Count
#
2
19 Sep 2023
Valentina Roumi
Little Gaynor Lake
Show Details
Comments
species
152.
Western Grebe
Count
#
15
19 Sep 2023
Thomas Heinrich
Boulder Reservoir complex--Boulder Reservoir
Show Details
Comments
species
153.
Brown-headed Cowbird
Count
#
1
19 Sep 2023
Jason Barcus
Walden Ponds Wildlife Habitat--Walden & Sawhill Ponds all together
species
154.
Virginia Rail
Count
#
1
19 Sep 2023
Jim Ward
Walden Ponds Wildlife Habitat--Walden & Sawhill Ponds all together
Show Details
Comments
species
155.
Warbling Vireo
Count
#
1
18 Sep 2023
Van Rudd
Green Mountain West Ridge Trail
species
156.
Northern Harrier
Count
#
1
18 Sep 2023
Valentina Roumi
South 66th St
Show Details
Comments
species
157.
Green Heron
Count
#
1
18 Sep 2023
Pamela S
Walden Ponds Wildlife Habitat--Walden & Sawhill Ponds all together
species
158.
Rock Wren
Count
#
2
18 Sep 2023
Valentina Roumi
National Center for Atmospheric Research Mesa
species
159.
Evening Grosbeak
Count
#
1
18 Sep 2023
Donna Sichko
White Rocks Trail area
Show Details
Comments
species
160.
Common Nighthawk
Count
#
1
17 Sep 2023
Bryan Guarente
1821 18th Ave
Show Details
Comments
species
161.
Western Kingbird
Count
#
2
17 Sep 2023
Catherine Labio
South Boulder Creek Trail West
species
162.
Baird's Sandpiper
Count
#
1
17 Sep 2023
Rhianna Truex
Lagerman Agricultural Preserve--Lagerman Reservoir
species
163.
Band-tailed Pigeon
Count
#
2
17 Sep 2023
Robin Allison
124 Ski Road
Show Details
Comments
species
164.
Northern Mockingbird
Count
#
1
17 Sep 2023
Gilbert Bouchard
East Boulder Trail--Teller Lakes
Show Details
Comments
species
165.
Eastern Kingbird
Count
#
1
17 Sep 2023
Phil Thorpe
Mesa Reservoir
Show Details
Comments
Photos
species
166.
Violet-green Swallow
Count
#
4
17 Sep 2023
carl starace
Walden Ponds Wildlife Habitat--Cottonwood Marsh/Wally Tove's Pond/Duck Pond
species
167.
American Three-toed Woodpecker
Count
#
1
17 Sep 2023
David Dowell
Niwot Ridge Road
species
168.
Mountain Bluebird
Count
#
3
17 Sep 2023
David Dowell
Niwot Ridge Road
species
169.
Swainson's Thrush
Count
#
2
17 Sep 2023
David Dowell
Niwot Ridge Road
species
170.
Lewis's Woodpecker
Count
#
1
17 Sep 2023
Thomas Heinrich
3rd & Forest
Show Details
Comments
species
171.
Willet
Count
#
2
17 Sep 2023
Jay Hutchins
Lagerman Agricultural Preserve--Lagerman Reservoir
Show Details
Comments
species
172.
White-throated Swift
Count
#
25
16 Sep 2023
Alyssa Hemler
Eldorado Mountain Open Space--Fowler Trail
Show Details
Comments
species
173.
Hammond's Flycatcher
Count
#
2
16 Sep 2023
Bruce Raup
South Boulder Creek West Trail, Midway Up, Boulder, Colorado, US (39.946, -105.26)
species
174.
Eastern Phoebe
Count
#
2
16 Sep 2023
Jane Baryames
Walden Ponds Wildlife Habitat--Walden & Sawhill Ponds all together
Show Details
Comments
Photos
species
175.
Western Bluebird
Count
#
2
15 Sep 2023
Noah Brinkman
National Center for Atmospheric Research Mesa
species
176.
Townsend's Warbler
Count
#
1
15 Sep 2023
sarah walker
Mud Lake Open Space
Show Details
Comments
species
177.
Yellow-bellied Sapsucker
Count
#
1
15 Sep 2023
Christian Nunes
Greenbelt Plateau
Show Details
Comments
species
178.
Gray Flycatcher
Count
#
1
15 Sep 2023
Christian Nunes
Greenbelt Plateau
Show Details
Comments
species
179.
MacGillivray's Warbler
Count
#
1
15 Sep 2023
Christian Nunes
Greenbelt Plateau
species
180.
Hermit Thrush
Count
#
1
15 Sep 2023
David Duey
659 Coyote Hill Rd, Allenspark US-CO 40.24847, -105.51147
species
181.
Northern Waterthrush
Count
#
1
15 Sep 2023
Joo Tan
Boulder Reservoir complex--Coot Lake
Show Details
Comments
species
182.
American Bittern
Count
#
1
14 Sep 2023
Valentina Roumi
Boulder Reservoir complex--Boulder Reservoir
species
183.
Dusky Grouse
Count
#
1
14 Sep 2023
Harold Eyster
Green Mountain West Ridge Trail
species
184.
Calliope Hummingbird
Count
#
1
13 Sep 2023
David Waltman
Crestview Estates
species
185.
Olive-sided Flycatcher
Count
#
1
13 Sep 2023
Richard Klassen 🦢
Lagerman Agricultural Preserve--Lagerman Reservoir
species
186.
Merlin
Count
#
1
13 Sep 2023
Peter Burke
Lagerman Agricultural Preserve--Lagerman Reservoir
species
187.
Cassin's Vireo
Count
#
2
13 Sep 2023
David Duey
Mountain time loop
species
188.
Virginia's Warbler
Count
#
1
12 Sep 2023
Carl Bendorf
Old Saint Vrain Rd
species
189.
Willow Flycatcher
Count
#
1
12 Sep 2023
Norman Erthal
Walden Ponds Wildlife Habitat--Walden & Sawhill Ponds all together
species
190.
Cliff Swallow
Count
#
5
12 Sep 2023
Jeremy Alcorn
Old Saint Vrain Rd
species
191.
Nashville Warbler
Count
#
1
12 Sep 2023
Randall Siebert
White Rocks Trail area
Show Details
Comments
species
192.
Loggerhead Shrike
Count
#
1
11 Sep 2023
Eric Boysen
Boulder Open Space--Beech Trail
species
193.
American Redstart
Count
#
1
11 Sep 2023
Rhianna Truex
Mountain View Cemetery (Boulder Co.)
Show Details
Comments
Photos
species
194.
Yellow-breasted Chat
Count
#
2
11 Sep 2023
Jason Barcus
Rabbit Mountain
species
195.
Bobolink
Count
#
1
10 Sep 2023
Christian Nunes
Burch Lake
species
196.
Northern Goshawk
Count
#
1
10 Sep 2023
Paul Slingsby
Heil Valley Ranch
species
197.
Red-necked Phalarope
Count
#
2
10 Sep 2023
Donna Stumpp
Little Gaynor Lake
species
198.
Black Tern
Count
#
7
9 Sep 2023
Kasper Moeller
McIntosh Lake
species
199.
Eastern Screech-Owl
Count
#
1
7 Sep 2023
Karen Coupland
Home - Harvest Junction Village in Longmont
Show Details
Comments
species
200.
Franklin's Gull
Count
#
1
7 Sep 2023
Kieran Schnitzspahn
Boulder Rock Club
species
201.
Bullock's Oriole
Count
#
2
7 Sep 2023
Chris Petrizzo
Walden Ponds Wildlife Habitat--Cottonwood Marsh/Wally Tove's Pond/Duck Pond
species
202.
Sandhill Crane
Count
#
2
6 Sep 2023
Valentina Roumi
Little Gaynor Lake
Show Details
Comments
Photos
species
203.
Northern Rough-winged Swallow
Count
#
1
6 Sep 2023
Bryan White
Little Gaynor Lake
species
204.
White-tailed Ptarmigan
Count
#
5
6 Sep 2023
Thomas Heinrich
Mount Audubon Trail
species
205.
Barn Owl
Count
#
1
5 Sep 2023
Ted Floyd
Waneka Lake/Greenlee Preserve
Show Details
Comments
species
206.
Caspian Tern
Count
#
2
5 Sep 2023
Bryan White
Boulder Reservoir complex--Boulder Reservoir
species
207.
Black-necked Stilt
Count
#
3
5 Sep 2023
John Rutenbeck
Little Gaynor Lake
Show Details
Comments
species
208.
Cordilleran Flycatcher
Count
#
1
5 Sep 2023
Jason Barcus
Old Saint Vrain Rd
Show Details
Comments
species
209.
Red-eyed Vireo
Count
#
1
4 Sep 2023
Michael Patterson
ACNP (Private, Restricted Access)
Show Details
Comments
Photos
species
210.
Long-billed Curlew
Count
#
5
3 Sep 2023
Greg Vassilopoulos
Lagerman Agricultural Preserve--Lagerman Reservoir
Show Details
Comments
Photos
species
211.
Western Sandpiper
Count
#
2
3 Sep 2023
Susan Downey
Lagerman Agricultural Preserve--Lagerman Reservoir
Show Details
Comments
Photos
species
212.
Great-tailed Grackle
Count
#
3
2 Sep 2023
Patricia Cullen
Jim Hamm Nature Area
species
213.
Semipalmated Plover
Count
#
1
2 Sep 2023
Candice Johnson
Lagerman Agricultural Preserve--Lagerman Reservoir
species
214.
Fox Sparrow
Count
#
1
2 Sep 2023
David Duey
Mountain time loop
species
215.
Long-billed Dowitcher
Count
#
1
2 Sep 2023
Jane Baryames
White Rocks Trail area
species
216.
Brown-capped Rosy-Finch
Count
#
6
31 Aug 2023
Jonathan Montgomery
Mount Audubon Trail
Show Details
Comments
Photos
species
217.
Bank Swallow
Count
#
1
29 Aug 2023
Kieran Schnitzspahn
Fairview High School
species
218.
Clark's Grebe
Count
#
7
26 Aug 2023
Laurel Barnhill
Terry Lake
species
219.
Least Flycatcher
Count
#
1
26 Aug 2023
Benjamin Antieau
Flatirons Vista Trail
species
220.
Black-bellied Plover
Count
#
1
25 Aug 2023
Valentina Roumi
Lagerman Agricultural Preserve--Lagerman Reservoir
Show Details
Comments
Photos
species
221.
Red-headed Woodpecker
Count
#
1
25 Aug 2023
Eileen Rutherford
31265 7, Lyons, Colorado, US (40.207, -105.293)
Show Details
Comments
Photos
species
222.
Flammulated Owl
Count
#
1
20 Aug 2023
Kieran Schnitzspahn
Home
Show Details
Comments
species
223.
Black Swift
Count
#
1
20 Aug 2023
Sol Charlton
Summer Hawk drive area park
Show Details
Comments
species
224.
Grasshopper Sparrow
Count
#
1
17 Aug 2023
Steve Harder
Eldorado Mountain Open Space--Spring Brook Loop
species
225.
Orchard Oriole
Count
#
2
17 Aug 2023
Pamela S
White Rocks Trail area
Show Details
Comments
Photos
species
226.
Upland Sandpiper
Count
#
1
16 Aug 2023
Tracy Pheneger 🪺
Lagerman Agricultural Preserve--Lagerman Reservoir
Show Details
Comments
species
227.
White-winged Crossbill
Count
#
2
14 Aug 2023
Cole Wild
Beaver Reservoir and Trailhead
Show Details
Comments
species
228.
Marbled Godwit
Count
#
1
13 Aug 2023
Teresa buowgirl
Lagerman Agricultural Preserve--Lagerman Reservoir
Show Details
Comments
species
229.
Northern Parula
Count
#
1
11 Aug 2023
Ron Bolton
Old Saint Vrain Rd
Show Details
Comments
species
230.
Northern Pygmy-Owl
Count
#
1
8 Aug 2023
Alan Brelsford
Magnolia Road, Nederland, Colorado, US (39.961, -105.443)
species
231.
Dickcissel
Count
#
1
8 Aug 2023
Sandra Hardy Reigel
East Boulder Trail--Teller Lakes
Show Details
Comments
Photos
species
232.
Winter Wren
Count
#
1
7 Aug 2023
Leslie S
Twin Lakes (Boulder County)
Show Details
Comments
species
233.
Northern Saw-whet Owl
Count
#
1
6 Aug 2023
Chris Chappell
Rocky Mountain Ecodharma Retreat Center
species
234.
Cattle Egret
Count
#
1
5 Aug 2023
Alexander Brown
Little Gaynor Lake
Show Details
Comments
species
235.
Ovenbird
Count
#
1
2 Aug 2023
Carl Bendorf
Old Saint Vrain Rd
Show Details
Comments
Photos
species
236.
Northern Cardinal
Count
#
1
22 Jul 2023
Richard Trinkner
Boulder
Show Details
Comments
species
237.
Limpkin
Count
#
1
20 Jul 2023
Ryan Dibala
East Boulder Trail--Teller Lakes
Show Details
Comments
species
238.
Boreal Owl
Count
#
1
17 Jul 2023
Will Anderson
CU Mountain Research Station
Show Details
Comments
Audio
species
239.
Greater White-fronted Goose
Count
#
1
13 Jul 2023
John Bryan
McIntosh Lake
Show Details
Comments
Photos
species
240.
White-winged Dove
Count
#
1
6 Jul 2023
Susan McClellan
Unit B
Show Details
Comments
species
241.
Yellow-billed Cuckoo
Count
#
1
3 Jul 2023
josh Ketry
Gregory Canyon
species
242.
Rose-breasted Grosbeak
Count
#
1
24 Jun 2023
Susan Hofacker
McClintock Trail
species
243.
Eastern Bluebird
Count
#
1
23 Jun 2023
Winston Liu
Betasso Preserve
Show Details
Comments
Photos
species
244.
Black-bellied Whistling-Duck
Count
#
7
20 Jun 2023
Kyle Carlsen
Pella Crossing Open Space
Show Details
Comments
Photos
species
245.
Baltimore Oriole
Count
#
1
26 May 2023
Eric DeFonso 🦑
East Boulder Trail--Teller Lakes
Show Details
Comments
Audio
species
246.
Chestnut-sided Warbler
Count
#
1
25 May 2023
Andy Knolla
Marshall Marsh
Show Details
Comments
species
247.
Black-throated Green Warbler
Count
#
1
24 May 2023
Michael Morton
Skunk Canyon Trails
Show Details
Comments
species
248.
Blue-winged Warbler
Count
#
1
21 May 2023
Peter Gent
Gregory Canyon
Show Details
Comments
species
249.
Sanderling
Count
#
1
20 May 2023
Jeremy Alcorn
Little Gaynor Lake
Show Details
Comments
species
250.
Forster's Tern
Count
#
1
20 May 2023
Stephen Chang
Stearns Lake
species
251.
Short-billed Dowitcher
Count
#
1
20 May 2023
James Campbell
Stearns Lake
Show Details
Comments
Photos
species
252.
Summer Tanager
Count
#
1
20 May 2023
Emily Ringoen
Golden Ponds Park and Nature Area
Show Details
Comments
species
253.
Philadelphia Vireo
Count
#
1
20 May 2023
matt nipper
University of Colorado campus--Confluence Ponds and Skunk Creek
Show Details
Comments
Photos
species
254.
White-throated Sparrow
Count
#
1
16 May 2023
Jeff Percell
KOA Lake
Show Details
Comments
species
255.
Yellow-throated Vireo
Count
#
1
16 May 2023
Deb Piranian
University of Colorado campus--Confluence Ponds and Skunk Creek
Show Details
Comments
species
256.
Palm Warbler
Count
#
1
16 May 2023
Kathryn Kay
University of Colorado campus--Confluence Ponds and Skunk Creek
Show Details
Comments
species
257.
Black-and-white Warbler
Count
#
1
16 May 2023
willem van vliet-
University of Colorado campus--Confluence Ponds and Skunk Creek
species
258.
Hooded Warbler
Count
#
1
16 May 2023
willem van vliet-
University of Colorado campus--Confluence Ponds and Skunk Creek
Show Details
Comments
species
259.
Black-throated Gray Warbler
Count
#
1
16 May 2023
willem van vliet-
University of Colorado campus--Confluence Ponds and Skunk Creek
species
260.
Tennessee Warbler
Count
#
1
16 May 2023
Cole Wild
Ish Reservoir (Larimer/Boulder cos.)
Show Details
Comments
species
261.
Blackpoll Warbler
Count
#
1
15 May 2023
Rob Cassady
North Open Space
Show Details
Comments
Photos
species
262.
Harris's Sparrow
Count
#
1
15 May 2023
John Bryan
Hall Ranch--South
Show Details
Comments
species
263.
Ash-throated Flycatcher
Count
#
1
13 May 2023
Chris Pagliaro
My home
Show Details
Comments
species
264.
Cape May Warbler
Count
#
1
12 May 2023
Steven Mlodinow
Longmont, Peregrine Circle
Show Details
Comments
species
265.
White-eyed Vireo
Count
#
1
12 May 2023
Stephen Chang
Golden Ponds Park and Nature Area
Show Details
Comments
species
266.
Yellow-throated Warbler
Count
#
1
11 May 2023
Thomas Heinrich
3rd & Forest
Show Details
Comments
Photos
species
267.
Greater Scaup
Count
#
1
11 May 2023
Christian Nunes
Lagerman Agricultural Preserve--Lagerman Reservoir
Show Details
Comments
species
268.
Mississippi Kite
Count
#
1
9 May 2023
Christian Nunes
Home Faith Court
Show Details
Comments
species
269.
Red-breasted Merganser
Count
#
1
9 May 2023
Richard Trinkner
Boulder Community Garden
Show Details
Comments
species
270.
Yellow-crowned Night-Heron
Count
#
1
7 May 2023
Christian Nunes
Golden Ponds Park and Nature Area
Show Details
Comments
species
271.
Whimbrel
Count
#
2
6 May 2023
Richard Chant
Walden Ponds
species
272.
Trumpeter Swan
Count
#
1
3 May 2023
Patricia Cullen
6835 Hygiene Rd, Longmont US-CO 40.18883, -105.19406
Show Details
Comments
species
273.
Prairie Warbler
Count
#
1
3 May 2023
Peter Gent
Lykins Gulch
species
274.
Bonaparte's Gull
Count
#
1
2 May 2023
Patrick Morgan
Lagerman Agricultural Preserve--Lagerman Reservoir
Show Details
Comments
species
275.
American Tree Sparrow
Count
#
1
2 May 2023
Chris Petrizzo
Teller Lakes South
Show Details
Comments
Photos
species
276.
Common Loon
Count
#
2
1 May 2023
Tim Smart
Valmont Overlook (Legion Park)
Show Details
Comments
species
277.
Golden-crowned Sparrow
Count
#
1
30 Apr 2023
Catherine Labio
Marshall Marsh
Show Details
Comments
species
278.
Eastern Meadowlark
Count
#
2
30 Apr 2023
Dan Zmolek
Walden Ponds Wildlife Habitat--Walden & Sawhill Ponds all together
Show Details
Comments
Audio
species
279.
Red-bellied Woodpecker
Count
#
1
30 Apr 2023
Chris Petrizzo
Walden Ponds Wildlife Habitat--Cottonwood Marsh/Wally Tove's Pond/Duck Pond
Show Details
Comments
Photos
species
280.
Glossy Ibis
Count
#
1
27 Apr 2023
Jeff Percell
East Boulder Trail--Teller Lakes
Show Details
Comments
Videos
species
281.
Snow Goose
Count
#
1
27 Apr 2023
Laura Salter
Walden Ponds Wildlife Habitat--Walden & Sawhill Ponds all together
Show Details
Comments
species
282.
Black Phoebe
Count
#
1
22 Apr 2023
Laura Steadman
University of Colorado Boulder--South Campus
Show Details
Comments
species
283.
Cackling Goose
Count
#
1
21 Apr 2023
Hunter Johnson
Viele Park
Show Details
Comments
species
284.
Curve-billed Thrasher
Count
#
1
18 Apr 2023
Cole Wild
Gunbarrel Hill
Show Details
Comments
species
285.
Mexican Duck
Count
#
1
18 Apr 2023
Eric DeFonso 🦑
Stearns Lake
Show Details
Comments
Photos
species
286.
Bohemian Waxwing
Count
#
2
18 Apr 2023
Ernest Crvich
Pleasant View Marsh
Show Details
Comments
species
287.
Sagebrush Sparrow
Count
#
1
16 Apr 2023
Dan Zmolek
Mesa Reservoir
Show Details
Comments
Photos
species
288.
Barrow's Goldeneye
Count
#
1
11 Apr 2023
Joe Marino
University of Colorado Boulder, Boulder US-CO (40.0134,-105.2455)
Show Details
Comments
species
289.
Black-throated Sparrow
Count
#
1
7 Apr 2023
Ellen Harris
248 Old South Saint Vrain Rd, Lyons US-CO 40.21367, -105.27478
Show Details
Comments
species
290.
Rough-legged Hawk
Count
#
1
4 Apr 2023
Karen Coupland
Road to Rabbit Mountain
Show Details
Comments
Photos
species
291.
Ross's Goose
Count
#
1
3 Apr 2023
Grant Wiest
Stearns Lake
Show Details
Comments
species
292.
Northern Shrike
Count
#
1
3 Apr 2023
Jeff Yegian
Walden Ponds Wildlife Habitat--Walden & Sawhill Ponds all together
Show Details
Comments
species
293.
Swamp Sparrow
Count
#
1
28 Mar 2023
Eric DeFonso 🦑
Stearns Lake
Show Details
Comments
species
294.
Short-eared Owl
Count
#
1
27 Mar 2023
Nick Moore
Lagerman Agricultural Preserve--Lagerman Reservoir
Show Details
Comments
Photos
species
295.
Varied Thrush
Count
#
1
22 Mar 2023
Valentina Roumi
1405 Wildwood Lane, Boulder, Colorado, US (39.975, -105.266)
Show Details
Comments
Photos
species
296.
Long-tailed Duck
Count
#
1
15 Mar 2023
Scott Brown
Lagerman Agricultural Preserve--Swede Lakes
Show Details
Comments
Photos
species
297.
Lesser Black-backed Gull
Count
#
1
12 Mar 2023
Kevin Smith
Walden Ponds Wildlife Habitat--Walden & Sawhill Ponds all together
species
298.
Gray-crowned Rosy-Finch
Count
#
7
5 Mar 2023
Harold Eyster
Brainard Lake
species
299.
Iceland Gull
Count
#
1
4 Mar 2023
Alexander Brown
Baseline Reservoir
Show Details
Comments
species
300.
Rusty Blackbird
Count
#
1
27 Feb 2023
Jeff Yegian
Waneka Lake/Greenlee Preserve
Show Details
Comments
species
301.
Black Rosy-Finch
Count
#
4
19 Feb 2023
Genie Burch
Eagle Peak homesite
Show Details
Comments
species
302.
Tundra Swan
Count
#
1
1 Feb 2023