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BBS Route · Alaska · BCR 2

Cold Bay Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 61 species recorded across 23 survey years, still active.

61Species RecordedSpecies recordedDistinct species detected on standard-protocol BBS runs here across all years on record — a measure of survey breadth, not a complete checklist.Full methodology →
23Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1993–2025Span
6Observers

Bird Species Found on Alaska Cold Bay

Top 40 of 61 species by most recent count. Each links to its species trend.

Species recorded on the Cold Bay route.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →History
Western SandpiperScolopacidae4302022+446%2000
Golden-crowned SparrowPasserellidae952025+116%1995
Glaucous-winged GullLaridae832025-54%1995
Greater ScaupAnatidae652025-7%1995
Short-billed GullLaridae582025+133%1995
Rock SandpiperScolopacidae562025-63%1995
Lapland LongspurCalcariidae502025-39%1995
Least SandpiperScolopacidae462025+237%1995
American PipitMotacillidae452025+54%1995
Savannah SparrowPasserellidae312025-53%1995
Black ScoterAnatidae272025+169%1995
Wilson's SnipeScolopacidae242025+20%1995
Yellow WarblerParulidae232025+272%1995
Semipalmated PloverCharadriidae222025+18%1995
Aleutian TernLaridae162025+700%2024
Bank SwallowHirundinidae152025-67%1995
Willow PtarmiganPhasianidae142025-90%1995
MallardAnatidae102025-54%1995
Green-winged TealAnatidae102025+300%1996
Northern PintailAnatidae102024+50%2001
Arctic TernLaridae102025+300%2019
Fox SparrowPasserellidae72025+7%1995
Red-breasted MerganserAnatidae62025+120%2006
DunlinScolopacidae62025+78%2003
Tundra SwanAnatidae52025-34%1998
Hermit ThrushTurdidae52025+75%1997
Tree SwallowHirundinidae52025+67%2003
Greater YellowlegsScolopacidae52025+214%2022
Northern ShrikeLaniidae52025+0%2021
Bald EagleAccipitridae42025+260%1996
Pacific LoonGaviidae42021n/an/a
Horned PuffinAlcidae32005n/an/a
White-crowned SparrowPasserellidae32024+200%2023
Short-billed DowitcherScolopacidae22024+50%2006
Black-billed MagpieCorvidae22025+120%1996
Common RavenCorvidae22024-33%1999
Red-necked PhalaropeScolopacidae22024+100%1994
GyrfalconFalconidae22019+50%2002
Parasitic JaegerStercorariidae22024+100%1995
Wilson's WarblerParulidae22024-50%1999

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. A route is a sample, not a census.