BBS Route · Alaska · BCR 4
Tower Bluffs Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 55 species recorded across 26 survey years, still active.
55Species Recorded
26Years Surveyed
1994–2023Span
6Observers
Bird Species Found on Alaska Tower Bluffs
Top 40 of 55 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| Swainson's Thrush | Turdidae | 74 | 2023 | +305% | 1996 | |
| American Robin | Turdidae | 41 | 2023 | +63% | 1996 | |
| Alder Flycatcher | Tyrannidae | 33 | 2023 | +0% | 1996 | |
| Ruby-crowned Kinglet | Regulidae | 13 | 2023 | +42% | 1996 | |
| Canada Jay | Corvidae | 11 | 2023 | +113% | 1996 | |
| White-crowned Sparrow | Passerellidae | 8 | 2023 | +120% | 2000 | |
| Fox Sparrow | Passerellidae | 4 | 2023 | +33% | 2002 | |
| Chipping Sparrow | Passerellidae | 4 | 2023 | +567% | 2003 | |
| Western Wood-Pewee | Tyrannidae | 4 | 2022 | +150% | 2008 | |
| Hermit Thrush | Turdidae | 3 | 2016 | -90% | 1996 | |
| Varied Thrush | Turdidae | 3 | 2022 | -70% | 1996 | |
| White-winged Crossbill | Fringillidae | 3 | 2023 | -66% | 2002 | |
| Boreal Chickadee | Paridae | 3 | 2023 | -17% | 2000 | |
| Canada Goose | Anatidae | 3 | 2022 | +50% | 1997 | |
| Lincoln's Sparrow | Passerellidae | 3 | 2023 | +257% | 2001 | |
| Olive-sided Flycatcher | Tyrannidae | 2 | 2023 | -12% | 1996 | |
| Violet-green Swallow | Hirundinidae | 2 | 2007 | +154% | 1996 | |
| Orange-crowned Warbler | Parulidae | 2 | 2023 | -53% | 1996 | |
| Trumpeter Swan | Anatidae | 2 | 2023 | +0% | 2013 | |
| Red-necked Grebe | Podicipedidae | 2 | 2013 | n/a | n/a | |
| Hairy Woodpecker | Picidae | 2 | 2017 | +100% | 2016 | |
| Black-backed Woodpecker | Picidae | 2 | 2022 | n/a | n/a | |
| Wilson's Warbler | Parulidae | 1 | 2023 | -65% | 1997 | |
| Black-capped Chickadee | Paridae | 1 | 2022 | -13% | 2003 | |
| Wilson's Snipe | Scolopacidae | 1 | 2004 | -50% | 1996 | |
| Northern Waterthrush | Parulidae | 1 | 1995 | n/a | n/a | |
| Short-billed Gull | Laridae | 1 | 1996 | n/a | n/a | |
| Spotted Sandpiper | Scolopacidae | 1 | 2014 | +0% | 1996 | |
| Bald Eagle | Accipitridae | 1 | 2008 | +0% | 1996 | |
| Great Horned Owl | Strigidae | 1 | 2019 | +25% | 2004 | |
| Downy Woodpecker | Picidae | 1 | 2011 | -67% | 1996 | |
| Common Raven | Corvidae | 1 | 2023 | -77% | 2000 | |
| Blackpoll Warbler | Parulidae | 1 | 2019 | +0% | 2016 | |
| Townsend's Warbler | Parulidae | 1 | 2023 | +0% | 2000 | |
| Red-tailed Hawk | Accipitridae | 1 | 2007 | +0% | 1997 | |
| Hammond's Flycatcher | Tyrannidae | 1 | 2023 | +60% | 2001 | |
| Bohemian Waxwing | Bombycillidae | 1 | 2019 | -40% | 2002 | |
| Northern Shrike | Laniidae | 1 | 1997 | n/a | n/a | |
| Yellow Warbler | Parulidae | 1 | 2023 | -75% | 2008 | |
| Gray-cheeked Thrush | Turdidae | 1 | 2015 | +33% | 2003 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.