BBS Route · Alaska · BCR 4
Cantwell Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 76 species recorded across 25 survey years, still active.
76Species Recorded
25Years Surveyed
1982–2021Span
6Observers
Bird Species Found on Alaska Cantwell
Top 40 of 76 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| White-crowned Sparrow | Passerellidae | 162 | 2021 | +56% | 1987 | |
| American Tree Sparrow | Passerellidae | 22 | 2021 | -68% | 1987 | |
| White-winged Crossbill | Fringillidae | 17 | 2019 | +16% | 1999 | |
| Blackpoll Warbler | Parulidae | 14 | 2021 | +47% | 1987 | |
| Gray-cheeked Thrush | Turdidae | 14 | 2021 | -53% | 1987 | |
| Savannah Sparrow | Passerellidae | 11 | 2021 | -15% | 1987 | |
| Bank Swallow | Hirundinidae | 11 | 2003 | -86% | 1986 | |
| Lincoln's Sparrow | Passerellidae | 10 | 2019 | +90% | 1998 | |
| Wilson's Warbler | Parulidae | 10 | 2021 | -40% | 1987 | |
| Arctic Warbler | Phylloscopidae | 10 | 2021 | -53% | 1987 | |
| American Robin | Turdidae | 10 | 2021 | -40% | 1987 | |
| Cliff Swallow | Hirundinidae | 10 | 2015 | +233% | 2012 | |
| Fox Sparrow | Passerellidae | 9 | 2021 | -15% | 1987 | |
| Ruby-crowned Kinglet | Regulidae | 7 | 2021 | -35% | 1987 | |
| Orange-crowned Warbler | Parulidae | 7 | 2021 | +181% | 1994 | |
| Greater Scaup | Anatidae | 6 | 2013 | +0% | 2005 | |
| Canada Jay | Corvidae | 5 | 2021 | +64% | 1987 | |
| Lesser Yellowlegs | Scolopacidae | 4 | 2021 | -66% | 1987 | |
| Varied Thrush | Turdidae | 4 | 2021 | +3% | 1987 | |
| Northern Waterthrush | Parulidae | 3 | 2021 | -68% | 1987 | |
| Swainson's Thrush | Turdidae | 3 | 2021 | +6% | 1994 | |
| Bohemian Waxwing | Bombycillidae | 3 | 2019 | +14% | 2004 | |
| White-winged Scoter | Anatidae | 3 | 2010 | +25% | 2005 | |
| Short-billed Gull | Laridae | 2 | 2019 | -70% | 1987 | |
| Lesser Scaup | Anatidae | 2 | 2010 | +18% | 1987 | |
| Red-necked Phalarope | Scolopacidae | 2 | 2001 | +14% | 1986 | |
| Wilson's Snipe | Scolopacidae | 2 | 2021 | -82% | 1987 | |
| Greater Yellowlegs | Scolopacidae | 2 | 2005 | +0% | 1998 | |
| Solitary Sandpiper | Scolopacidae | 2 | 2021 | +0% | 2004 | |
| Trumpeter Swan | Anatidae | 2 | 2015 | +29% | 1999 | |
| Boreal Chickadee | Paridae | 2 | 2021 | +67% | 2000 | |
| Northern Harrier | Accipitridae | 2 | 1998 | n/a | n/a | |
| Least Sandpiper | Scolopacidae | 2 | 2013 | +0% | 2002 | |
| Canada Goose | Anatidae | 2 | 2011 | +0% | 2003 | |
| Herring Gull | Laridae | 1 | 1982 | n/a | n/a | |
| Mallard | Anatidae | 1 | 2017 | -56% | 2002 | |
| Northern Hawk Owl | Strigidae | 1 | 2000 | +0% | 1982 | |
| Olive-sided Flycatcher | Tyrannidae | 1 | 2018 | -30% | 1987 | |
| Black-billed Magpie | Corvidae | 1 | 2015 | -20% | 1987 | |
| Common Raven | Corvidae | 1 | 2021 | +0% | 1987 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.