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BBS Route · Alaska · BCR 4

Coldfoot Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 74 species recorded across 31 survey years, still active.

74Species 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 →
31Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1994–2025Span
5Observers

Bird Species Found on Alaska Coldfoot

Top 40 of 74 species by most recent count. Each links to its species trend.

Species recorded on the Coldfoot 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
Swainson's ThrushTurdidae372025+15%1996
White-crowned SparrowPasserellidae292025-52%1996
Fox SparrowPasserellidae222025-13%1996
Common RavenCorvidae132025+400%1998
Northern WaterthrushParulidae122025+46%1997
Wilson's WarblerParulidae112025-60%1997
Gray-cheeked ThrushTurdidae92025-62%1996
Olive-sided FlycatcherTyrannidae82021+100%1997
Orange-crowned WarblerParulidae72025-76%1997
Wilson's SnipeScolopacidae62025-27%1996
Sharp-tailed GrousePhasianidae62025n/an/a
Yellow WarblerParulidae52025+67%1998
Bohemian WaxwingBombycillidae42022+75%2009
American RobinTurdidae42025-65%1996
Varied ThrushTurdidae42025-38%1996
BuffleheadAnatidae42025-20%1995
Arctic WarblerPhylloscopidae42022-22%2003
Tree SwallowHirundinidae32023-17%2006
Ruby-crowned KingletRegulidae32025-73%1996
Lincoln's SparrowPasserellidae32025-19%1997
Violet-green SwallowHirundinidae32022-22%1997
Black ScoterAnatidae32002+0%1996
Black-capped ChickadeeParidae32022+200%2004
American GoshawkAccipitridae32012n/an/a
Bank SwallowHirundinidae32022+50%2015
Sandhill CraneGruidae32018n/an/a
Green-winged TealAnatidae32025n/an/a
Greater ScaupAnatidae22024-67%1997
Lesser YellowlegsScolopacidae22019-29%1997
Alder FlycatcherTyrannidae22024-5%1996
Canada JayCorvidae22025-56%1996
Savannah SparrowPasserellidae22024-82%1996
Lesser ScaupAnatidae22003-33%1996
Short-eared OwlStrigidae22025+50%2011
Townsend's SolitaireTurdidae22022-33%2006
Glaucous GullLaridae22013n/an/a
Least SandpiperScolopacidae22018+100%2015
MallardAnatidae22023n/an/a
Say's PhoebeTyrannidae12021+0%2001
American Tree SparrowPasserellidae12024-57%1996

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