Boulder Change Location

Recent Visits

Checklists submitted within the last hour are not shown.
Observer Date Species
Peter Burke 18 Jan 2020 12
Alexander Brown 18 Jan 2020 1
Alexander Brown 18 Jan 2020 10
Leslie S 18 Jan 2020 11
Eric Dinkel 18 Jan 2020 5
Bryan Guarente 18 Jan 2020 3
Charles Hundertmark 18 Jan 2020 13
Bryan Guarente 18 Jan 2020 1
Eric Dinkel 18 Jan 2020 6
More Recent Visits...

Top eBirders

Updated ~20 hr(s) ago.
1 John Vanderpoel
369
2 Christian Nunes
364
3 Todd Deininger
363
4 Alexander Brown
361
4 David Waltman
361
6 Ted Floyd
353
7 William Kaempfer
352
8 Peter Burke
344
9 Randall Siebert
328
10 Nick Moore
326
Top 100 eBirders...

411 Species 96,313 Checklists

Updated ~9 hr(s) ago.
Species Name Count Date By
1 Cackling Goose 50 18 Jan 2020 Peter Burke
 
2 Canada Goose 12 18 Jan 2020 Peter Burke
 
3 Mallard 8 18 Jan 2020 Peter Burke
 
4 Common Goldeneye 38 18 Jan 2020 Peter Burke
 
5 Common Merganser 120 18 Jan 2020 Peter Burke
 
6 Ring-billed Gull 150 18 Jan 2020 Peter Burke
 
7 Herring Gull 9 18 Jan 2020 Peter Burke
 
8 Bald Eagle 1 18 Jan 2020 Peter Burke
 
9 Northern Flicker 2 18 Jan 2020 Peter Burke
 
10 American Kestrel 1 18 Jan 2020 Peter Burke
 
11 Black-capped Chickadee 1 18 Jan 2020 Peter Burke
 
12 Red-breasted Merganser 3 18 Jan 2020 Alexander Brown
 
13 California Gull 1 18 Jan 2020 Alexander Brown N
 
14 Lesser Black-backed Gull 1 18 Jan 2020 Alexander Brown N
 
15 American Crow 2 18 Jan 2020 Alexander Brown
 
16 Hooded Merganser 2 18 Jan 2020 Leslie S
 
17 Glaucous Gull 1 18 Jan 2020 Leslie S N
 
18 Ross's Goose 1 18 Jan 2020 Eric Dinkel N
 
Cackling/Canada Goose 50 18 Jan 2020 Eric Dinkel
 
19 Townsend's Solitaire 1 18 Jan 2020 Eric Dinkel
 
20 Belted Kingfisher 1 18 Jan 2020 Bryan Guarente
 
Oligarchy Ditch Greenway
21 House Finch 8 18 Jan 2020 Bryan Guarente
 
Oligarchy Ditch Greenway
22 Gadwall 2 18 Jan 2020 Charles Hundertmark
 
23 Great Blue Heron 1 18 Jan 2020 Charles Hundertmark
 
24 Red-tailed Hawk 1 18 Jan 2020 Charles Hundertmark
 
25 Black-billed Magpie 2 18 Jan 2020 Charles Hundertmark
 
26 European Starling 9 18 Jan 2020 Charles Hundertmark
 
27 American Robin 3 18 Jan 2020 Charles Hundertmark
 
28 Song Sparrow 1 18 Jan 2020 Charles Hundertmark
 
29 Western Meadowlark 1 18 Jan 2020 Charles Hundertmark
 
30 Dark-eyed Junco 2 18 Jan 2020 Eric Dinkel
 
31 Snow Goose 1 18 Jan 2020 Susan Downey
 
32 Northern Shoveler 1 18 Jan 2020 Susan Downey
 
33 Rock Pigeon X 18 Jan 2020 Susan Downey
 
34 Eurasian Collared-Dove X 18 Jan 2020 Susan Downey
 
35 Mourning Dove 4 18 Jan 2020 Susan Downey
 
36 Great Horned Owl 1 18 Jan 2020 Susan Downey
 
37 American Tree Sparrow 2 18 Jan 2020 Susan Downey
 
38 Red-winged Blackbird X 18 Jan 2020 Susan Downey
 
39 Red Crossbill 1 18 Jan 2020 Kim Grubert
 
Arapaho National Forest, Nederland US-CO (39.9772,-105.5150)
Common/Barrow's Goldeneye 2 18 Jan 2020 John Salisbury
 
Carolyn Holmberg Preserve
40 Northern Harrier 1 18 Jan 2020 John Salisbury
 
Carolyn Holmberg Preserve
41 American Wigeon 9 18 Jan 2020 Alexander Brown
 
42 Ring-necked Duck 3 18 Jan 2020 Alexander Brown
 
43 Blue Jay 2 18 Jan 2020 Alexander Brown
 
44 House Sparrow 4 18 Jan 2020 Alexander Brown
 
45 Pied-billed Grebe 1 18 Jan 2020 David Waltman
 
46 Common Raven 2 18 Jan 2020 Alexander Brown
 
47 Downy Woodpecker 1 18 Jan 2020 Scott Severs
 
Dry Creek Greenway
48 Bushtit 1 18 Jan 2020 Scott Severs P
 
Dry Creek Greenway
49 Red-breasted Nuthatch 1 18 Jan 2020 Scott Severs
 
Dry Creek Greenway
50 White-breasted Nuthatch 1 18 Jan 2020 Leslie S
 
51 American Dipper 1 18 Jan 2020 Leslie S P
 
52 Pine Siskin 1 18 Jan 2020 Leslie S
 
53 Harris's Sparrow 1 18 Jan 2020 Leslie S P
 
54 Canada Jay 1 18 Jan 2020 Rich Ferrick P
 
55 Bufflehead 5 18 Jan 2020 Susan Downey
 
56 American Coot 1 18 Jan 2020 Susan Downey
 
57 American Goldfinch 5 18 Jan 2020 Susan Downey
 
58 Brown Creeper 1 18 Jan 2020 Todd Deininger
 
House
59 White-crowned Sparrow 1 18 Jan 2020 Todd Deininger
 
House
60 Lesser Scaup 8 18 Jan 2020 Richard Trinkner
 
61 Mountain Chickadee 5 18 Jan 2020 Steve Kajdasz
 
62 Pygmy Nuthatch 2 18 Jan 2020 Aidan Coohill
 
Columbia Cemetry, Boulder US-CO (40.0083,-105.2836)
63 Merlin 1 18 Jan 2020 David Waltman P
 
401–499 Seward St, Lyons US-CO (40.2277,-105.2713)
64 Golden Eagle 2 18 Jan 2020 Leslie S
 
65 Canyon Wren 1 18 Jan 2020 Leslie S
 
66 Spotted Towhee 1 18 Jan 2020 Ron Podhajsky
 
Gunbarrel Green
hawk sp. 1 18 Jan 2020 Jack Bushong N
 
67 Cedar Waxwing 10 18 Jan 2020 David Waltman P
 
2960 Diagonal Hwy, Boulder US-CO (40.0371,-105.2547)
68 Hairy Woodpecker 1 18 Jan 2020 Ted Floyd N
 
69 Steller's Jay 4 18 Jan 2020 Ted Floyd
 
70 Woodhouse's Scrub-Jay 4 18 Jan 2020 Ted Floyd
 
71 Evening Grosbeak 1 18 Jan 2020 Ted Floyd
 
finch sp. 1 18 Jan 2020 Ted Floyd
 
sparrow sp. 3 18 Jan 2020 Ted Floyd
 
72 Killdeer 1 18 Jan 2020 Mark Minner-Lee P
 
73 Northern Shrike 1 18 Jan 2020 Kevin Wolff
 
74 Redhead 4 18 Jan 2020 Eric DeFonso
 
Larus sp. 18 18 Jan 2020 Bryan Tarbox N
 
75 Yellow-rumped Warbler 1 18 Jan 2020 Todd Deininger
 
House
passerine sp. 1 17 Jan 2020 Rob Cassady
 
Snow/Ross's x Cackling/Canada Goose (hybrid) 1 17 Jan 2020 Jonathan Montgomery P
 
76 Cassin's Finch 1 17 Jan 2020 David Tønnessen
 
Quinn St
77 White-throated Sparrow 1 17 Jan 2020 David Tønnessen
 
Quinn St
78 Green-winged Teal 1 17 Jan 2020 Bryan Tarbox
 
duck sp. 2 17 Jan 2020 Ted Floyd
 
pigeon/dove sp. 1 17 Jan 2020 Ted Floyd
 
79 Prairie Falcon 1 17 Jan 2020 Alex Cruz Jr N
 
80 Clark's Nutcracker 4 17 Jan 2020 Loren Merrill
 
81 Eastern Screech-Owl 1 17 Jan 2020 PL Osborn
 
480 Japonica Way, Boulder US-CO (40.0369,-105.2902)
82 Ferruginous Hawk 1 16 Jan 2020 Bryan Guarente
 
N 63rd St (south of Nelson Rd)
83 Cooper's Hawk 1 16 Jan 2020 David Waltman
 
Crestview 8464 W Fork Rd (private residence)
84 Golden-crowned Kinglet 1 16 Jan 2020 Ben Sampson N
 
752 12th Street, Boulder, Colorado, US (40.001, -105.277)
85 Rough-legged Hawk 1 16 Jan 2020 carl starace
 
86 Wild Turkey 3 16 Jan 2020 David Waltman
 
Crestview 8464 W Fork Rd (private residence)
87 Northern Pygmy-Owl 1 16 Jan 2020 David Dowell
 
crow/raven sp. 1 16 Jan 2020 Ted Floyd
 
88 Greater White-fronted Goose 1 16 Jan 2020 Rob Cassady P
 
89 Swamp Sparrow 1 15 Jan 2020 Chipper Phillips N
 
Black-capped/Mountain Chickadee 1 15 Jan 2020 Cole Sites
 
90 Marsh Wren 1 15 Jan 2020 Alex Cruz Jr N
 
Snow x Cackling Goose (hybrid) 1 15 Jan 2020 Ted Floyd P
 
falcon sp. 1 15 Jan 2020 Ted Floyd
 
gull sp. 15 15 Jan 2020 Christian Nunes
 
Snow/Ross's Goose 1 15 Jan 2020 Luke Pheneger N
 
Dry Creek, and surrounding Neighborhoods ( in all directions ).
91 Sharp-shinned Hawk 1 15 Jan 2020 John Vanderpoel
 
Estate Circle
92 Pine Grosbeak 1 14 Jan 2020 Loren Merrill
 
FSR 505
93 Ruddy Duck 4 14 Jan 2020 Jonathan Montgomery P
 
blackbird sp. 5 14 Jan 2020 Margaret Arp
 
dabbling duck sp. 1 14 Jan 2020 Ted Floyd
 
94 Eastern Bluebird 3 12 Jan 2020 Chipper Phillips N
 
Mallard/Mexican Duck 1 12 Jan 2020 Leslie S
 
Sharp-shinned/Cooper's Hawk 1 12 Jan 2020 Chris Owens
 
Buteo sp. 1 12 Jan 2020 Bryan Tarbox N
 
95 Canvasback 4 12 Jan 2020 Holden Maxfield
 
96 Wilson's Snipe 1 12 Jan 2020 Bryan Tarbox
 
Golden/Bald Eagle 2 12 Jan 2020 Ron Podhajsky
 
Accipiter sp. 1 12 Jan 2020 carl starace
 
nuthatch sp. 1 12 Jan 2020 Rob Cassady
 
Mallard (Domestic type) 1 11 Jan 2020 Jack Bushong N
 
Downy/Hairy Woodpecker 1 11 Jan 2020 Gary Koehn
 
97 Rock Wren 1 11 Jan 2020 Peter Burke N
 
98 Gray Catbird 1 11 Jan 2020 Luke Pheneger N
 
Streptopelia sp. 2 11 Jan 2020 Ted Floyd
 
raven sp. 1 10 Jan 2020 Diane Roberts
 
Palo park Boulder US-CO (40.0461,-105.2518)
99 Iceland Gull 1 10 Jan 2020 Bryan Tarbox
 
100 Northern Goshawk 1 9 Jan 2020 Loren Merrill
 
FSR 505
Greater/Lesser Scaup 1 8 Jan 2020 Catherine Labio
 
101 Varied Thrush 1 8 Jan 2020 Spencer England P
 
Apple Way / Peach Way
bird sp. 1 8 Jan 2020 Ted Floyd N
 
102 Horned Lark 3 8 Jan 2020 Christian Nunes
 
CR 66 grasslands
kinglet sp. 1 8 Jan 2020 Jessie Brause
 
1373 Clemson Dr, Longmont US-CO (40.1830,-105.1414)
103 Ruby-crowned Kinglet 1 7 Jan 2020 Alexander Brown N
 
104 Double-crested Cormorant 2 7 Jan 2020 Aidan Coohill
 
105 Lesser Goldfinch 4 6 Jan 2020 William Kaempfer N
 
Goat Trailhead, 3rd and Forest
106 Lapland Longspur 3 6 Jan 2020 Ted Floyd
 
Vinelife Church grounds
goose sp. 1 5 Jan 2020 Frank Farrell N
 
rosy-finch sp. 2 5 Jan 2020 Christian Nunes
 
107 Yellow-bellied Sapsucker 1 5 Jan 2020 Ron Podhajsky P
 
108 Northern Pintail 2 5 Jan 2020 Adrian Lakin
 
waterfowl sp. 6 5 Jan 2020 Richard Littauer N
 
woodpecker sp. 1 5 Jan 2020 Richard Littauer
 
diurnal raptor sp. 1 5 Jan 2020 Richard Littauer
 
109 American Three-toed Woodpecker 1 5 Jan 2020 Christian Nunes
 
Eldora
110 Western Grebe 1 2 Jan 2020 Matt Hofeditz
 
111 Say's Phoebe 1 31 Dec 2019 Rob Cassady P
 
Western/Clark's Grebe 1 30 Dec 2019 Nathan Pieplow
 
Zonotrichia sp. 1 30 Dec 2019 Luke Pheneger
 
Dry Creek, and surrounding Neighborhoods ( in all directions ).
merganser sp. 25 30 Dec 2019 Ted Floyd
 
112 Bohemian Waxwing 6 29 Dec 2019 David Smith N
 
Home
Aythya sp. 1 28 Dec 2019 Ted Floyd
 
113 Wood Duck 3 28 Dec 2019 Steve Frye
 
large falcon sp. 1 28 Dec 2019 Steve Frye
 
114 Rusty Blackbird 1 26 Dec 2019 Derek Lecy P
 
Church West, Boulder US-CO (39.9687,-105.2129)
115 Great-tailed Grackle 7 19 Dec 2019 Chris Petrizzo
 
116 American Pipit 1 18 Dec 2019 John Bryan
 
117 Gray-crowned Rosy-Finch 5 17 Dec 2019 Adrian Lakin
 
118 Brown-capped Rosy-Finch 2 17 Dec 2019 Adrian Lakin
 
119 Long-tailed Duck 2 17 Dec 2019 Steven Mlodinow P
 
120 Brewer's Blackbird 1 17 Dec 2019 Matt Hofeditz
 
121 Tundra Swan 4 15 Dec 2019 Mark Minner-Lee P
 
Boulder Reservoir, Boulder US-CO (40.0846,-105.2265)
122 Virginia Rail 1 15 Dec 2019 Christian Nunes
 
Windhover Ranch- OSMP No Public Access
123 Wilson's Warbler 1 15 Dec 2019 Christian Nunes P
 
Swan Goose (Domestic type) 1 15 Dec 2019 Meghan McCutchan
 
124 Chihuahuan Raven 3 15 Dec 2019 John Vanderpoel N
 
bluebird sp. 6 14 Dec 2019 Stephen Chang N
 
125 Brown-headed Cowbird 1 11 Dec 2019 Joey Negreann P
 
126 Yellow-headed Blackbird 2 11 Dec 2019 Cindy B Martin N
 
127 Western Bluebird 2 8 Dec 2019 Ron Podhajsky
 
Mallard x Mexican Duck (hybrid) 1 7 Dec 2019 Leslie S P
 
Rusty/Brewer's Blackbird 20 7 Dec 2019 Maurice Salata
 
grackle sp. 3 7 Dec 2019 Rob Cassady N
 
128 Long-eared Owl 1 7 Dec 2019 Maikel Wise N
 
1601 Great Western Dr, Longmont US-CO (40.1550,-105.0621)
129 Horned Grebe 3 4 Dec 2019 Aaron Yappert
 
130 Sandhill Crane 18 3 Dec 2019 Rob Cassady N
 
131 Mountain Bluebird 1 2 Dec 2019 Chris Petrizzo N
 
132 Common Grackle 1 2 Dec 2019 Pam Koch P
 
2313 Village Ln, Longmont US-CO (40.1696,-105.1318)
133 White-winged Dove 1 1 Dec 2019 Patricia Cullen
 
4221 N 75th St, Boulder US-CO (40.0510,-105.1805)
134 Hermit Thrush 1 30 Nov 2019 David Dowell N
 
Willow Creek Park, Longmont
135 Indigo Bunting 1 28 Nov 2019 Ron Podhajsky N
 
Gunbarrel Green
136 Pacific Loon 1 25 Nov 2019 David Waltman N
 
137 Eared Grebe 5 25 Nov 2019 Mark Minner-Lee
 
138 Greater Scaup 2 23 Nov 2019 Mark Minner-Lee P
 
139 American White Pelican 15 23 Nov 2019 Anonymous eBirder
 
140 Barrow's Goldeneye 1 21 Nov 2019 Chipper Phillips P
 
Yellow-bellied/Red-naped Sapsucker 1 19 Nov 2019 Ron Podhajsky N
 
swan sp. 2 18 Nov 2019 David Smith P
 
teal sp. 2 18 Nov 2019 carl starace
 
Spinus sp. (goldfinch sp.) 1 17 Nov 2019 Ted Floyd
 
Common/Red-breasted Merganser 9 16 Nov 2019 Aaron Yappert
 
141 Bonaparte's Gull 2 16 Nov 2019 Peter Burke
 
Ross's x Cackling Goose (hybrid) 1 14 Nov 2019 Jack Bushong P
 
Trumpeter/Tundra Swan 2 14 Nov 2019 Tony Downs N
 
Bohemian/Cedar Waxwing 4 13 Nov 2019 David Smith
 
Home
small falcon sp. 1 13 Nov 2019 Leslie S
 
Horned/Eared Grebe X 9 Nov 2019 Chipper Phillips
 
142 Common Loon 1 9 Nov 2019 David Bailey
 
143 Mexican Duck 1 8 Nov 2019 Jack Bushong P
 
144 Sora 1 8 Nov 2019 David Smith P
 
grebe sp. 1 7 Nov 2019 Mitchell Bailey
 
145 Greater Yellowlegs 1 7 Nov 2019 Karen Coupland P
 
chickadee sp. 1 7 Nov 2019 Anonymous eBirder N
 
146 Clark's Grebe 1 7 Nov 2019 Stephen Chang
 
147 Dusky Grouse 1 6 Nov 2019 Loren Merrill
 
148 Burrowing Owl 1 4 Nov 2019 Christian Nunes N
 
Graylag Goose (Domestic type) 1 3 Nov 2019 Boulder Bird Club
 
Walden Ponds Trailhead
wren sp. 1 3 Nov 2019 Ron Podhajsky
 
149 Northern Saw-whet Owl 1 3 Nov 2019 Steve Roels P
 
Walker Ranch
150 Chipping Sparrow 6 3 Nov 2019 Spencer England
 
151 Lincoln's Sparrow 1 2 Nov 2019 Ernest Crvich P
 
Snow x Canada Goose (hybrid) 1 2 Nov 2019 Kathy Gritz N
 
152 Long-billed Dowitcher 1 30 Oct 2019 John Rutenbeck
 
153 Townsend's Warbler 1 29 Oct 2019 Steven Mlodinow N
 
Canyon Creek, 29th-30th
154 Black-throated Green Warbler 1 29 Oct 2019 Steven Mlodinow N
 
Canyon Creek, 29th-30th
155 Orange-crowned Warbler 1 29 Oct 2019 Steven Mlodinow N
 
east St Vrain Creek Trail
156 Sage Thrasher 1 28 Oct 2019 Thomas Heinrich P
 
Boulder Valley Ranch, Eagle Trail
157 Blue-winged Teal 3 28 Oct 2019 Ted Floyd
 
158 Red-necked Grebe 1 28 Oct 2019 Peter Burke N
 
159 American Avocet 2 28 Oct 2019 Thomas Heinrich P
 
loon sp. 2 28 Oct 2019 Peter Burke N
 
160 Dunlin 1 27 Oct 2019 Rob Cassady N
 
Loggerhead/Northern Shrike 1 27 Oct 2019 Chip Clouse N
 
2330 West Coal Creek Drive, Louisville, Colorado, US (39.941, -105.193)
161 Wood Thrush 1 26 Oct 2019 Timo Mitzen N
 
Wood Thrush stakeout
162 Snowy Egret 1 26 Oct 2019 Rob Cassady P
 
163 Osprey 1 26 Oct 2019 Sarah Spotten P
 
164 Western Tanager 1 26 Oct 2019 Eric DeFonso N
 
2915 Baseline Rd, Boulder US-CO (40.0018,-105.2548)
165 Blackburnian Warbler 1 26 Oct 2019 Ernest Crvich P
 
166 Clay-colored Sparrow 1 25 Oct 2019 Nick Moore N
 
Avexis Colorado (No Trespassing)
167 Ovenbird 1 25 Oct 2019 Rolf Hertenstein P
 
warbler sp. (Parulidae sp.) 1 25 Oct 2019 Karen Strong N
 
2915 Baseline Rd, Boulder US-CO (40.0018,-105.2547)
168 Surf Scoter 1 25 Oct 2019 Chris Petrizzo
 
169 Blue-gray Gnatcatcher 1 25 Oct 2019 Chris Petrizzo P
 
170 Nashville Warbler 1 24 Oct 2019 Toni Anthony N
 
2950 Bixby Ave, Boulder US-CO (40.0020,-105.2544)
scoter sp. 1 24 Oct 2019 Cole Sites N
 
Blue-winged/Cinnamon Teal 2 24 Oct 2019 David Dowell
 
171 Savannah Sparrow 1 24 Oct 2019 Christian Nunes P
 
Sam's Lane
owl sp. 1 24 Oct 2019 Peter Burke
 
172 Red-naped Sapsucker 1 23 Oct 2019 Peter Burke N
 
2915 Baseline Rd, Boulder US-CO (40.0015,-105.2555)
173 Blackpoll Warbler 1 23 Oct 2019 Steve Larson N
 
2400 57th St, Boulder US-CO (40.0264,-105.2239)
Catharus sp. 1 23 Oct 2019 Luke Pheneger
 
777 29th St, Boulder US-CO (40.0014,-105.2560)
174 Palm Warbler 1 23 Oct 2019 Will Anderson N
 
175 House Wren 1 21 Oct 2019 Chris Petrizzo P
 
sapsucker sp. 1 20 Oct 2019 Kevin DeBoer N
 
750 29th Street, Boulder, Colorado, US (40.001, -105.255)
176 Broad-winged Hawk 1 19 Oct 2019 Sarah Spotten N
 
Graylag Goose (Domestic type) x Canada Goose (hybrid) 1 19 Oct 2019 Trevor Hartwig
 
177 Plumbeous Vireo 1 19 Oct 2019 Stephen Chang N
 
Short-billed/Long-billed Dowitcher 8 17 Oct 2019 Gregory Miller
 
178 Broad-tailed Hummingbird 1 17 Oct 2019 Thomas Heinrich P
 
3rd & Forest
179 Brewer's Sparrow 1 16 Oct 2019 Ernest Crvich P
 
180 Black-chinned Hummingbird 1 13 Oct 2019 Christian Nunes P
 
4614 16th St, Boulder US-CO (40.0583,-105.2767)
181 Vesper Sparrow 1 13 Oct 2019 Frank Farrell N
 
182 Baird's Sandpiper 1 13 Oct 2019 Joe Chen
 
183 Franklin's Gull 8 12 Oct 2019 Peter Burke
 
184 Common Yellowthroat 1 12 Oct 2019 Loren Merrill N
 
185 Least Sandpiper 1 12 Oct 2019 Sarah Spotten
 
186 Red-necked Phalarope 2 12 Oct 2019 Sarah Spotten
 
187 Lesser Yellowlegs 2 12 Oct 2019 Sarah Spotten
 
188 Barn Swallow 6 12 Oct 2019 Sarah Spotten
 
pipit sp. 1 12 Oct 2019 Mark Minner-Lee N
 
Buteo/eagle sp. 1 12 Oct 2019 Katy Shirley
 
189 Bewick's Wren 1 12 Oct 2019 Ted Floyd A
 
Greater/Lesser Yellowlegs 1 11 Oct 2019 Nathan Pieplow
 
190 Chestnut-collared Longspur 2 11 Oct 2019 Nathan Pieplow N
 
peep sp. 4 11 Oct 2019 David Smith
 
191 Spotted Sandpiper 2 11 Oct 2019 David Smith
 
192 Sprague's Pipit 1 11 Oct 2019 Barbara Brown P
 
193 Pectoral Sandpiper 1 11 Oct 2019 Peter Burke P
 
194 Sagebrush Sparrow 1 11 Oct 2019 Peter Burke N
 
195 Peregrine Falcon 1 10 Oct 2019 David Dowell N
 
196 Turkey Vulture 2 9 Oct 2019 Sue Riffe
 
197 Great Egret 1 9 Oct 2019 Karen Axe
 
Boulder Reservoir Park, Boulder US-CO (40.0851,-105.2259)
198 Williamson's Sapsucker 1 9 Oct 2019 Ernest Crvich P
 
plover sp. 1 8 Oct 2019 David Dowell N
 
199 Forster's Tern 1 8 Oct 2019 Peter Burke P
 
200 Virginia's Warbler 1 8 Oct 2019 Thomas Heinrich P
 
3rd & Forest
201 Warbling Vireo 1 7 Oct 2019 Ernest Crvich P
 
hummingbird sp. 1 7 Oct 2019 Thomas Heinrich
 
3rd & Forest
202 Northern Mockingbird 1 7 Oct 2019 Thomas Heinrich P
 
3rd & Forest
203 Grasshopper Sparrow 1 6 Oct 2019 Richard Trinkner N
 
204 Lark Sparrow 1 6 Oct 2019 Ryan Bushong P
 
205 Cattle Egret 1 6 Oct 2019 Eric Albright
 
thrush sp. 1 6 Oct 2019 Megan Jones N
 
Spizella sp. 2 6 Oct 2019 Mark Minner-Lee
 
shorebird sp. 3 6 Oct 2019 Michelle Robbins
 
206 American Bittern 1 6 Oct 2019 Rob Cassady P
 
white egret sp. 1 6 Oct 2019 Rob Cassady P
 
207 Rufous Hummingbird 1 4 Oct 2019 Jack Bushong P
 
208 Swainson's Hawk 1 4 Oct 2019 David Smith
 
209 Pinyon Jay 1 4 Oct 2019 Chipper Phillips N
 
210 Hammond's Flycatcher 1 4 Oct 2019 Adrian Lakin P
 
211 Black-crowned Night-Heron 1 4 Oct 2019 Adrian Lakin
 
Western/Eastern Wood-Pewee 1 3 Oct 2019 David Dowell P
 
swallow sp. 2 3 Oct 2019 Jay Hutchins
 
212 Short-eared Owl 1 2 Oct 2019 Mark Minner-Lee N
 
213 Brown Thrasher 1 2 Oct 2019 Ryan Bushong P
 
214 Green-tailed Towhee 1 2 Oct 2019 Micah Yarbrough N
 
80305, Boulder US-CO (39.9879,-105.2744)
215 Black-bellied Plover 1 2 Oct 2019 Cole Talbot N
 
Selasphorus sp. 1 1 Oct 2019 Alexander Brown N
 
4560 Darley Avenue, Boulder
216 Sabine's Gull 1 30 Sep 2019 carl starace
 
217 Cinnamon Teal 1 29 Sep 2019 JoAnn Potter Riggle P
 
Rose-breasted/Black-headed Grosbeak 1 28 Sep 2019 Robert King N
 
Chance Acres
218 Dusky Flycatcher 1 28 Sep 2019 Richard Trinkner P
 
219 Western Wood-Pewee 1 27 Sep 2019 Jack Bushong P
 
220 Yellow Warbler 1 26 Sep 2019 David Dowell N
 
221 Solitary Sandpiper 1 25 Sep 2019 Kelly Ormesher
 
St Vrain Creek
222 White-throated Swift 3 25 Sep 2019 Sarah Leavesley
 
223 American Redstart 1 23 Sep 2019 Meghan McCutchan P
 
Fairview HS
224 Cassin's Vireo 1 23 Sep 2019 John Malenich P
 
Glossy/White-faced Ibis 1 22 Sep 2019 Leslie S N
 
225 White-faced Ibis 1 22 Sep 2019 Jennie Duberstein N
 
226 MacGillivray's Warbler 1 21 Sep 2019 Jack Bushong N
 
227 Western Kingbird 1 21 Sep 2019 Aidan Coohill
 
Tree/Violet-green Swallow 2 21 Sep 2019 Aidan Coohill
 
Empidonax sp. 1 21 Sep 2019 Christine Sparks
 
228 Band-tailed Pigeon 1 20 Sep 2019 Alexander Brown N
 
229 Stilt Sandpiper 1 20 Sep 2019 Peter Burke
 
230 Cassin's Kingbird 1 18 Sep 2019 Ryan Bushong N
 
Setophaga sp. 1 17 Sep 2019 Jason Barcus
 
231 Lark Bunting 1 17 Sep 2019 Sue Riffe
 
232 Black-headed Grosbeak 1 17 Sep 2019 art reisman P
 
flycatcher sp. (Tyrannidae sp.) 2 17 Sep 2019 Karen Coupland
 
233 Eastern Kingbird 1 17 Sep 2019 Leslie S P
 
234 Olive-sided Flycatcher 1 16 Sep 2019 Sue Riffe N
 
235 Cliff Swallow 1 16 Sep 2019 Sue Riffe N
 
236 Tree Swallow 3 16 Sep 2019 Ron Podhajsky N
 
237 Red-headed Woodpecker 1 15 Sep 2019 Carl Bendorf P
 
238 Blue Grosbeak 4 15 Sep 2019 Bill Schmoker A
 
tern sp. 1 15 Sep 2019 Barbara Brown
 
239 Common Nighthawk 3 14 Sep 2019 Charles Hundertmark N
 
2546 Lake Meadow Dr, Lafayette US-CO (40.0224,-105.1268)
240 Red-eyed Vireo 1 14 Sep 2019 Barbara Brown P
 
241 Northern Rough-winged Swallow 4 14 Sep 2019 Todd Deininger
 
242 Lazuli Bunting 2 14 Sep 2019 Steve Frye
 
243 Swainson's Thrush 1 13 Sep 2019 Robert Thoren
 
(39.9832,-105.3237)
vireo sp. 1 13 Sep 2019 Jordan Gunn N
 
Mitchell and Blue Lake
244 Northern Waterthrush 1 12 Sep 2019 David Dowell
 
Dry Creek
245 White-tailed Ptarmigan 4 12 Sep 2019 Ron Joost N
 
Buchanan Pass Trail
246 Calliope Hummingbird 1 12 Sep 2019 Randall Siebert
 
Sterna sp. 2 11 Sep 2019 Ted Floyd N
 
Gray/Dusky Flycatcher 1 9 Sep 2019 Olivier Randoing
 
247 Least Flycatcher 1 8 Sep 2019 Steven Mlodinow
 
248 Western Sandpiper 1 7 Sep 2019 Mark Minner-Lee
 
249 Wilson's Phalarope 1 7 Sep 2019 Steve Frye
 
250 Common Poorwill 1 6 Sep 2019 Loren Merrill
 
FSR 505
251 Rose-breasted Grosbeak 1 5 Sep 2019 willem van vliet- N
 
Central Boulder, yard
Pacific-slope/Cordilleran Flycatcher (Western Flycatcher) 1 5 Sep 2019 Ann Duey
 
Mountain time loop
252 Bank Swallow 2 5 Sep 2019 carl starace
 
253 Black Swift 11 4 Sep 2019 Richard May P
 
254 Semipalmated Sandpiper 1 3 Sep 2019 Mike Hensley
 
255 Violet-green Swallow 6 3 Sep 2019 Loren Merrill
 
pewee sp. (Contopus sp.) 1 3 Sep 2019 Robert Thoren
 
256 Bullock's Oriole 1 3 Sep 2019 Matt Spangler
 
swift sp. 2 2 Sep 2019 Michael Britten
 
Yard on Carolina Ave., Longmont, CO
Cassin's/Plumbeous Vireo 1 2 Sep 2019 Carl Bendorf
 
257 Loggerhead Shrike 1 1 Sep 2019 Mike Ostrowski
 
Semipalmated/Western Sandpiper 2 1 Sep 2019 Tom Ward
 
Red-necked/Red Phalarope 8 1 Sep 2019 Chris Friedman P
 
Lagerman Reservoir
258 White-winged Crossbill 2 1 Sep 2019 Nathaniel Behl P
 
Beaver Reservoir (Private Property)
259 Willow Flycatcher 1 31 Aug 2019 Matt Spangler P
 
Cassin's/Western Kingbird 1 31 Aug 2019 Leslie S
 
260 Yellow-breasted Chat 1 31 Aug 2019 Steven Mlodinow
 
261 Cordilleran Flycatcher 1 31 Aug 2019 Anonymous eBirder
 
262 Marbled Godwit 4 30 Aug 2019 Sue Riffe N
 
phalarope sp. 1 30 Aug 2019 Peter Burke N
 
263 Chimney Swift 3 29 Aug 2019 Dean Shoup
 
Black-crowned/Yellow-crowned Night-Heron 1 28 Aug 2019 Jack Bushong N
 
264 Upland Sandpiper 1 28 Aug 2019 Scott Severs N
 
Oakwood Drive-Longmont
265 Black-necked Stilt 1 27 Aug 2019 carl starace N
 
Ruby-throated/Black-chinned Hummingbird 1 25 Aug 2019 Ryan Bushong
 
266 Sanderling 1 20 Aug 2019 Steven Mlodinow N
 
267 Eastern Phoebe 1 18 Aug 2019 Cathy Wilhelmi
 
268 Semipalmated Plover 1 12 Aug 2019 carl starace
 
crossbill sp. 1 12 Aug 2019 Marcel Such N
 
Indian Peak Wilderness—Devil’s Thumb Trail (Boulder Co.)
Lazuli x Indigo Bunting (hybrid) 1 11 Aug 2019 Joel Such
 
nighthawk sp. 1 10 Aug 2019 Sawyer Smith
 
269 Flammulated Owl 1 8 Aug 2019 Sawyer Smith
 
1600 Mariposa Avenue, Boulder, Colorado, US (39.998, -105.273)
270 Lewis's Woodpecker 1 8 Aug 2019 Roberta Chase
 
2875 County Road 67, Boulder US-CO (39.9319,-105.2705)
271 Orchard Oriole 1 7 Aug 2019 Donna Stumpp P
 
272 Caspian Tern 1 7 Aug 2019 Eric DeFonso
 
Domestic goose sp. (Domestic type) 1 6 Aug 2019 Thomas Dietsch
 
Kanemoto Park, Longmont US-CO (40.1439,-105.1089)
Western/Eastern Meadowlark 1 6 Aug 2019 Kaleb Kroeker
 
6870 Nelson Road, Longmont, Colorado, US (40.151, -105.188)
273 Willet 1 3 Aug 2019 Steve Frye
 
Spotted/Eastern Towhee (Rufous-sided Towhee) 1 3 Aug 2019 Leonard Gal
 
yellow-bellied kingbird sp. 1 2 Aug 2019 Nathan Pieplow N
 
Yellow-billed/Black-billed Cuckoo 1 2 Aug 2019 Chris Curwen
 
274 Green Heron 1 30 Jul 2019 Mark Minner-Lee
 
275 Cassin's Sparrow 1 30 Jul 2019 Mark Minner-Lee N
 
276 Fox Sparrow 2 30 Jul 2019 Dave Hallock N
 
Arapaho Pass
Spizella sp./American Tree Sparrow 1 25 Jul 2019 David Smith
 
new world oriole sp. 1 20 Jul 2019 Kelly Ballantyne
 
Hammond's/Dusky Flycatcher 1 20 Jul 2019 Luke Pheneger
 
Green Mountain to Bear Peak (West Ridges Only)
277 Bobolink 2 19 Jul 2019 Chip Clouse
 
927 South Cherryvale Road, Boulder, Colorado, US (39.969, -105.213)
towhee sp. 1 19 Jul 2019 Roger Clark
 
Blue Lake
278 Dickcissel 1 17 Jul 2019 Barbara Brown N
 
Lazuli/Indigo Bunting 1 15 Jul 2019 Sue Riffe
 
96 Antelope Dr - Private Residence (Boulder)
rail/crake sp. 1 14 Jul 2019 Jack Bushong N
 
279 Summer Tanager 1 7 Jul 2019 Chipper Phillips P
 
S Snowmass Cir, Superior
280 Northern Cardinal 1 29 Jun 2019 Leslie S A
 
281 Barn Owl 2 26 Jun 2019 Kevin Schwartz
 
Daniel's Home
Bullock's/Baltimore Oriole 2 26 Jun 2019 tommi wolfe
 
Marshall Mesa
Neotropic/Double-crested Cormorant 8 26 Jun 2019 Carla Real
 
282 Black Tern 1 22 Jun 2019 Chipper Phillips N
 
283 Chestnut-sided Warbler 1 21 Jun 2019 Joe Chen N
 
284 Yellow-billed Cuckoo 1 20 Jun 2019 Ted Floyd N
 
Alder/Willow Flycatcher (Traill's Flycatcher) 1 15 Jun 2019 David Smith
 
Chimney/Vaux's Swift 1 9 Jun 2019 Kat Herrera
 
424 Utica Avenue, Boulder, Colorado, US (40,053, -105,292)
285 Scarlet Tanager 1 30 May 2019 Mike Patterson N
 
Kincross Dr. Yard
286 Gray Flycatcher 1 30 May 2019 Aidan Coohill N
 
East Boulder, Boulder US-CO (40.0156,-105.2423)
287 Northern Parula 1 29 May 2019 Christian Nunes
 
7885 Arlington Dr, Boulder US-CO (40.0068,-105.1689)
288 Magnolia Warbler 1 26 May 2019 Leslie S P
 
289 Hermit Warbler 1 25 May 2019 Kevin DeBoer N
 
290 Veery 2 23 May 2019 Ted Floyd N
 
291 Tennessee Warbler 1 22 May 2019 Michael Britten N
 
Yard on Carolina Ave., Longmont, CO
Rose-breasted x Black-headed Grosbeak (hybrid) 1 21 May 2019 David Waltman P
 
Crestview 8464 W Fork Rd (private residence)
Blue-winged Teal x Northern Shoveler (hybrid) 1 21 May 2019 Luke Pheneger P
 
Blue-winged x Cinnamon Teal (hybrid) 1 21 May 2019 Steven Mlodinow P
 
Western x Clark's Grebe (hybrid) 1 14 May 2019 Steven Mlodinow N
 
292 Golden-winged Warbler 1 11 May 2019 Eric DeFonso N
 
eagle sp. 1 10 May 2019 Christian Nunes N
 
293 Ash-throated Flycatcher 1 8 May 2019 Holden Maxfield P
 
phoebe sp. 1 8 May 2019 Toni Anthony
 
294 Black-and-white Warbler 1 7 May 2019 David Dowell P
 
295 Whimbrel 1 7 May 2019 Lisa Brin N
 
large swift sp. 1 3 May 2019 Peter Burke
 
296 Long-billed Curlew 1 2 May 2019 Peter Burke
 
297 White-eyed Vireo 1 30 Apr 2019 Mark Minner-Lee P
 
Black-capped x Mountain Chickadee (hybrid) 1 27 Apr 2019 Laura Steadman N
 
298 Pacific Wren 1 25 Apr 2019 Tom Behnfield P
 
4572 Robinson Place, Boulder, Colorado, US (40.058, -105.209)
Cooper's Hawk/Northern Goshawk 2 21 Apr 2019 Michael Lester N
 
Dutch Creek Park/Coal Creek trail
299 Sedge Wren 1 20 Apr 2019 Jack Bushong N
 
300 Winter Wren 1 20 Apr 2019 Christian Nunes P
 
Deadman's Gulch
301 McCown's Longspur 1 11 Apr 2019 Luke Pheneger P
 
Herring/Iceland Gull 1 16 Mar 2019 Jack Bushong N
 
Herring x Glaucous-winged Gull (hybrid) 1 27 Feb 2019 Ted Floyd P
 
Thomas Reservoir
302 Black Rosy-Finch 2 14 Feb 2019 William Kaempfer
 
12300 Magnolia Road, Nederland, Colorado, US (39.953, -105.503)
House/Purple Finch 1 7 Feb 2019 Lisa Brin N
 
303 Purple Finch 1 5 Feb 2019 Rolf Hertenstein P
 
Lyons old town
Snow x Ross's Goose (hybrid) 1 26 Jan 2019 Joe Chen
 
304 Brant 1 19 Jan 2019 Adam Johnson N
 
Graylag x Swan Goose (Domestic type) (hybrid) 1 14 Jan 2019 Ted Floyd N
 
Kenosha Pond
305 Vermilion Flycatcher 1 30 Dec 2018 Earl Johnson N
 
Domestic goose sp. (Domestic type) x Canada Goose (hybrid) 1 24 Dec 2018 Jack Bushong P
 
Greater White-fronted x Canada Goose (hybrid) 1 17 Dec 2018 Emil Yappert P
 
Gadwall x Mallard (hybrid) 1 3 Dec 2018 Sarah Spotten P
 
306 Mew Gull 1 18 Nov 2018 Sue Riffe N
 
307 Golden-crowned Sparrow 1 18 Nov 2018 Walter Wehtje N
 
308 Black Scoter 1 10 Nov 2018 Peter Burke
 
309 Parasitic Jaeger 1 10 Nov 2018 David Smith N
 
310 Ruby-throated Hummingbird 1 25 Oct 2018 William Kaempfer N
 
Redwood Ave. RTHU stakeout
311 Fork-tailed Flycatcher 1 23 Oct 2018 Karen Goetz N
 
312 Ring-necked Pheasant 1 23 Oct 2018 Peter Burke N
 
313 American Golden-Plover 1 21 Oct 2018 Catherine Labio N
 
large shorebird sp. 3 17 Oct 2018 Tracy Pheneger
 
314 Field Sparrow 1 15 Oct 2018 Peter Burke N
 
315 Yellow-throated Warbler 1 14 Oct 2018 Kat Bradley-Bennett N
 
Kat Home
Patagioenas sp. 10 29 Sep 2018 Dean Shoup N
 
316 Prothonotary Warbler 1 29 Sep 2018 Luke Pheneger N
 
Black x Eastern Phoebe (hybrid) 1 22 Sep 2018 Peter Burke N
 
Tringa sp. 1 16 Sep 2018 Leslie S
 
317 Little Blue Heron 1 8 Sep 2018 Alexander Brown N
 
318 Hooded Warbler 1 8 Sep 2018 Nathaniel Behl P
 
Beaver Reservoir (Private Property)
solitary vireo sp. 1 3 Sep 2018 Patricia Hargleroad
 
Peaceful Valley, colorado
heron sp. 1 29 Aug 2018 Ted Floyd N
 
319 Black-throated Gray Warbler 1 28 Aug 2018 Ernest Crvich P
 
320 Philadelphia Vireo 1 28 Aug 2018 William Kaempfer N
 
tanager sp. (Piranga sp.) 1 28 Jul 2018 Leslie S N
 
321 Carolina Wren 1 24 Jul 2018 Sarah Spotten A
 
Longmont - Stoney Ridge neighborhood
322 Ruddy Turnstone 1 18 Jul 2018 Philip Henson N
 
323 Eastern Meadowlark 1 15 Jul 2018 Dan Zmolek N
 
324 Scissor-tailed Flycatcher 1 14 Jul 2018 Bryan O'Leary N
 
Torreys Peak open space path
Pacific/Winter Wren 1 12 Jul 2018 Dan Zmolek A
 
Haemorhous sp. 6 7 Jul 2018 Brooke Keeney
 
288 Ridgeview Ln, Boulder US-CO (40.0766,-105.3318)
325 African Collared-Dove 1 25 Jun 2018 Ted Floyd N
 
326 Tricolored Heron 1 24 Jun 2018 Doug Ward N
 
327 Yellow-throated Vireo 1 14 May 2018 Laura Steadman N
 
328 Cape May Warbler 1 13 May 2018 Nick Moore P
 
Scolopacidae sp. 2 2 May 2018 Stephen Chang N
 
329 Glossy Ibis 1 29 Apr 2018 Caleb Strand P
 
Glossy x White-faced Ibis (hybrid) 1 29 Apr 2018 Caleb Strand P
 
330 Anna's Hummingbird 1 13 Apr 2018 Pablo Quezada N
 
331 Common Redpoll 1 29 Mar 2018 Ted Floyd P
 
332 Boreal Owl 1 11 Mar 2018 Christian Nunes A
 
333 Snowy Owl 1 25 Feb 2018 Ron Podhajsky N
 
Diagonal Hiway and Indpendence Rd
334 Pine Warbler 1 24 Jan 2018 David Dowell P
 
Dry Creek
Northern/Gilded Flicker 1 22 Jan 2018 Ted Floyd P
 
Lake Park Open Space
jay sp. 2 22 Jan 2018 Ted Floyd N
 
Lake Park Open Space
335 Trumpeter Swan 1 4 Jan 2018 Randall Siebert P
 
Graylag x Canada Goose (hybrid) 1 7 Dec 2017 Shawn Ashbaugh P
 
2829–2899 S 88th St, Superior US-CO (39.9383,-105.1475)
336 Black-throated Blue Warbler 1 15 Nov 2017 Gregg Goodrich P
 
337 Common Tern 1 15 Oct 2017 Bob Spencer N
 
338 Black Phoebe 1 3 Oct 2017 Scott Severs P
 
339 Red Phalarope 1 3 Oct 2017 Mark Minner-Lee N
 
Red Junglefowl (Domestic type) 25 29 Sep 2017 Ted Floyd P
 
Gadwall x Northern Pintail (hybrid) 1 13 Apr 2017 Christian Nunes P
 
340 Snowy Plover 1 1 Apr 2017 William Kaempfer N
 
American Wigeon x Mallard (hybrid) 1 11 Mar 2017 Christian Nunes P
 
Podiceps sp. 1 10 Mar 2017 Ted Floyd N
 
Panama Reservoir
341 Great Black-backed Gull 1 6 Feb 2017 David Waltman P
 
Mallard x Mottled Duck (hybrid) 1 4 Feb 2017 Jane Baryames P
 
Hecla Lake
Greater White-fronted x Cackling Goose (hybrid) 1 14 Jan 2017 Steven Mlodinow N
 
Longmont, Peregrine Circle
longspur sp. 2 5 Jan 2017 Jack Bushong N
 
Snow x Greater White-fronted Goose (hybrid) 1 27 Dec 2016 Tracy Pheneger P
 
US-CO-Boulder-5204-5498 Jay Rd - 40.0510x-105.2316
342 Red-throated Loon 1 6 Dec 2016 Christian Nunes N
 
OSMP Annex
343 Laughing Gull 1 9 Oct 2016 Ted Floyd N
 
Cliff/Cave Swallow 1 4 Jul 2016 Ted Floyd N
 
344 Canyon Towhee 1 6 Jun 2016 Kim Mauritz N
 
345 Least Bittern 1 21 May 2016 Kathy Mihm Dunning N
 
346 Gray-cheeked Thrush 1 16 May 2016 Christian Nunes N
 
8696 Lookout Rd- Knaus House OSMP -- private residence
347 Worm-eating Warbler 1 9 May 2016 John Malenich P