Menu

Boulder County Rare Bird Alert

The report below shows observations of rare birds in Boulder County. Includes both unreviewed and reviewed/approved observations.

Observations for last 7 days

Sort by

Cackling Goose Branta hutchinsii

Number observed: 1
UNCONFIRMED
Date: Apr 28, 2025 17:02
Location: Loomiller Park, Boulder, Colorado, United States
Observer: Christian Nunes

Cackling Goose Branta hutchinsii

Number observed: 1
CONFIRMED
Date: Apr 27, 2025 12:44
Location: Loomiller Park, Boulder, Colorado, United States
Observer: Nick Moore

Mexican Duck Anas diazi

Number observed: 1
CONFIRMED
Date: Apr 28, 2025 08:00
Location: Waneka Lake/Greenlee Preserve, Boulder, Colorado, United States
Observer: Dan Zmolek

Mexican Duck Anas diazi

Number observed: 1
CONFIRMED
Date: Apr 26, 2025 14:01
Location: Waneka Lake/Greenlee Preserve, Boulder, Colorado, United States
Observer: Tresa Moulton

Mexican Duck Anas diazi

Number observed: 1
CONFIRMED
Date: Apr 25, 2025 13:33
Location: Waneka Lake/Greenlee Preserve, Boulder, Colorado, United States
Observer: Tresa Moulton

Mexican Duck Anas diazi

Number observed: 1
CONFIRMED
Date: Apr 25, 2025 09:17
Location: Waneka Lake/Greenlee Preserve, Boulder, Colorado, United States
Observer: John Salisbury

Mexican Duck Anas diazi

Number observed: 1
CONFIRMED
Date: Apr 24, 2025 14:59
Location: Waneka Lake/Greenlee Preserve, Boulder, Colorado, United States
Observer: Sam Sahli

Band-tailed Pigeon Patagioenas fasciata

Number observed: 9
CONFIRMED
Date: Apr 26, 2025 18:17
Location: 124 Ski Road, Boulder, Colorado, United States
Observer: Robin Allison Jasper

Black-chinned Hummingbird Archilochus alexandri

Number observed: 1
CONFIRMED
Date: Apr 28, 2025 13:10
Location: Home, Boulder, Colorado, United States
Observer: Gwendolyn Tenney

Sanderling Calidris alba

Number observed: 2
CONFIRMED
Date: Apr 25, 2025 15:38
Location: Prince Lake #2, Boulder, Colorado, United States
Observer: Jesse White

Pectoral Sandpiper Calidris melanotos

Number observed: 1
CONFIRMED
Date: Apr 22, 2025 18:36
Location: Lagerman Agricultural Preserve--Lagerman Reservoir, Boulder, Colorado, United States
Observer: Casey Menick 🦤

Red-tailed Hawk (calurus/alascensis) Buteo jamaicensis calurus/alascensis

Number observed: 1
CONFIRMED
Date: Apr 27, 2025 16:24
Location: Hawthorn Gulch, Boulder, Colorado, United States
Observer: Kieran Schnitzspahn

Gray Flycatcher Empidonax wrightii

Number observed: 1
CONFIRMED
Date: Apr 25, 2025 16:57
Location: Boulder Community Garden, Boulder, Colorado, United States
Observer: Richard Trinkner

Cassin's Vireo Vireo cassinii

Number observed: 1
CONFIRMED
Date: Apr 26, 2025 06:56
Location: East Boulder Community Park, Boulder, Colorado, United States
Observer: Chris Petrizzo

Brown Thrasher Toxostoma rufum

Number observed: 1
CONFIRMED
Date: Apr 27, 2025 09:52
Location: Waneka Lake/Greenlee Preserve, Boulder, Colorado, United States
Observer: Jim Ward

Brown Thrasher Toxostoma rufum

Number observed: 1
CONFIRMED
Date: Apr 23, 2025 08:37
Location: Waneka Lake/Greenlee Preserve, Boulder, Colorado, United States
Observer: Alex Smolyanskaya

Clay-colored Sparrow Spizella pallida

Number observed: 2
CONFIRMED
Date: Apr 25, 2025 13:00
Location: Cattail Pond, Boulder, Colorado, United States
Observer: Patrick Morgan

Lark Sparrow Chondestes grammacus

Number observed: 2
CONFIRMED
Date: Apr 23, 2025 08:47
Location: Carolyn Holmberg Preserve & Rock Creek Farms, Boulder, Colorado, United States
Observer: Randall Siebert

Lark Sparrow Chondestes grammacus

Number observed: 1
CONFIRMED
Date: Apr 27, 2025 07:56
Location: Hecla Lake, Boulder, Colorado, United States
Observer: Randall Siebert

Spotted Towhee (arcticus) Pipilo maculatus arcticus

Number observed: 1
CONFIRMED
Date: Apr 22, 2025 13:08
Location: Longmont, Peregrine Circle, Boulder, Colorado, United States
Observer: Steven Mlodinow

Wilson's Warbler Cardellina pusilla

Number observed: 1
CONFIRMED
Date: Apr 25, 2025 09:15
Location: Twin Lakes (Boulder County), Boulder, Colorado, United States
Observer: Leslie S

Summer Tanager Piranga rubra

Number observed: 1
CONFIRMED
Date: Apr 27, 2025 18:03
Location: 1475 Marshall Rd, Boulder US-CO 39.95887, -105.23242, Boulder, Colorado, United States
Observer: Max Verhaeghe

Summer Tanager Piranga rubra

Number observed: 1
CONFIRMED
Date: Apr 25, 2025 08:00
Location: 1475 Marshall Rd, Boulder US-CO 39.95887, -105.23242, Boulder, Colorado, United States
Observer: Max Verhaeghe

Summer Tanager Piranga rubra

Number observed: 1
CONFIRMED
Date: Apr 24, 2025 19:56
Location: 1475 Marshall Rd, Boulder US-CO 39.95887, -105.23242, Boulder, Colorado, United States
Observer: Max Verhaeghe

Northern Cardinal Cardinalis cardinalis

Number observed: 1
CONFIRMED
Date: Apr 26, 2025 15:01
Location: 3rd & Forest, Boulder, Colorado, United States
Observer: Thomas Heinrich

Northern Cardinal Cardinalis cardinalis

Number observed: 1
CONFIRMED
Date: Apr 26, 2025 06:25
Location: 3rd & Forest, Boulder, Colorado, United States
Observer: Thomas Heinrich

Northern Cardinal Cardinalis cardinalis

Number observed: 1
CONFIRMED
Date: Apr 26, 2025 07:38
Location: Dakota Ridge Trail Head/3rd & Forrest, Boulder, Colorado, United States
Observer: John Salisbury

Northern Cardinal Cardinalis cardinalis

Number observed: 1
CONFIRMED
Date: Apr 26, 2025 07:28
Location: Goat Trail trailhead, Boulder, Colorado, United States
Observer: Valentina Roumi

Northern Cardinal Cardinalis cardinalis

Number observed: 1
CONFIRMED
Date: Apr 26, 2025 07:24
Location: Hawthorn Gulch, Boulder, Colorado, United States
Observer: Patricia Cullen

Lazuli Bunting Passerina amoena

Number observed: 1
CONFIRMED
Date: Apr 23, 2025 10:30
Location: Suburban Oasis, Boulder, Colorado, United States
Observer: Cheryl McCutchan
Go to top