BBS Route · Alaska · BCR 4
Mud River Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 80 species recorded across 29 survey years, still active.
80Species Recorded
29Years Surveyed
1993–2024Span
7Observers
Bird Species Found on Alaska Mud River
Top 40 of 80 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| Alder Flycatcher | Tyrannidae | 101 | 2024 | +36% | 1995 | |
| Swainson's Thrush | Turdidae | 85 | 2024 | +20% | 1995 | |
| Northern Waterthrush | Parulidae | 79 | 2024 | +24% | 1995 | |
| Blackpoll Warbler | Parulidae | 28 | 2024 | +0% | 1995 | |
| Fox Sparrow | Passerellidae | 27 | 2024 | +296% | 1995 | |
| Yellow Warbler | Parulidae | 25 | 2024 | -7% | 1995 | |
| Spotted Sandpiper | Scolopacidae | 21 | 2024 | -25% | 1995 | |
| Bank Swallow | Hirundinidae | 20 | 2024 | -21% | 1995 | |
| Common Goldeneye | Anatidae | 18 | 2024 | +63% | 2000 | |
| Wilson's Snipe | Scolopacidae | 16 | 2024 | -4% | 1995 | |
| White-winged Crossbill | Fringillidae | 16 | 2024 | -4% | 2000 | |
| Greater White-fronted Goose | Anatidae | 12 | 2024 | +105% | 1995 | |
| Lincoln's Sparrow | Passerellidae | 12 | 2024 | +371% | 1998 | |
| Green-winged Teal | Anatidae | 11 | 2024 | +33% | 1995 | |
| American Robin | Turdidae | 11 | 2024 | +22% | 1995 | |
| Canada Jay | Corvidae | 10 | 2024 | +417% | 1997 | |
| Trumpeter Swan | Anatidae | 10 | 2022 | +240% | 2007 | |
| Lesser Yellowlegs | Scolopacidae | 9 | 2024 | -62% | 1996 | |
| American Wigeon | Anatidae | 8 | 2024 | -7% | 1995 | |
| Greater Yellowlegs | Scolopacidae | 7 | 2004 | -72% | 1997 | |
| Lesser Scaup | Anatidae | 7 | 2021 | +225% | 1998 | |
| Long-tailed Jaeger | Stercorariidae | 6 | 1997 | n/a | n/a | |
| Sandhill Crane | Gruidae | 6 | 2022 | +71% | 2003 | |
| Osprey | Pandionidae | 5 | 2024 | +175% | 1998 | |
| Arctic Tern | Laridae | 4 | 2013 | -80% | 1996 | |
| Tree Swallow | Hirundinidae | 4 | 2024 | +417% | 1997 | |
| Mallard | Anatidae | 3 | 2024 | -76% | 1996 | |
| Rusty Blackbird | Icteridae | 3 | 2024 | +0% | 1996 | |
| Black-capped Chickadee | Paridae | 3 | 2024 | +133% | 2000 | |
| Gray-cheeked Thrush | Turdidae | 3 | 2024 | -52% | 1995 | |
| Olive-sided Flycatcher | Tyrannidae | 3 | 2024 | -33% | 1996 | |
| Tundra Swan | Anatidae | 3 | 2024 | +0% | 2011 | |
| Solitary Sandpiper | Scolopacidae | 3 | 2022 | -50% | 2015 | |
| Bohemian Waxwing | Bombycillidae | 3 | 2024 | +200% | 2019 | |
| Northern Pintail | Anatidae | 2 | 2012 | +22% | 1998 | |
| White-crowned Sparrow | Passerellidae | 2 | 2024 | -29% | 1995 | |
| Wilson's Warbler | Parulidae | 2 | 2024 | -30% | 1995 | |
| Varied Thrush | Turdidae | 2 | 2024 | -70% | 1995 | |
| Orange-crowned Warbler | Parulidae | 2 | 2024 | +275% | 1997 | |
| Arctic Warbler | Phylloscopidae | 2 | 2024 | +50% | 1999 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.