BirdAnalyst
BBS Route · Alaska · BCR 4

Birch Lake Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 77 species recorded across 26 survey years, still active.

77Species 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 →
26Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1968–2024Span
5Observers

Bird Species Found on Alaska Birch Lake

Top 40 of 77 species by most recent count. Each links to its species trend.

Species recorded on the Birch Lake 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 ThrushTurdidae182024-55%2000
Cliff SwallowHirundinidae152024-56%2003
Pine SiskinFringillidae122021+333%2004
Alder FlycatcherTyrannidae82024-88%2000
Lincoln's SparrowPasserellidae82024+117%2000
Boreal ChickadeeParidae72021+140%2002
Lesser ScaupAnatidae72005n/an/a
Northern WaterthrushParulidae52021-33%2001
Common GoldeneyeAnatidae52018+400%2000
Ring-necked DuckAnatidae52001n/an/a
Black-capped ChickadeeParidae42022+100%2001
Surf ScoterAnatidae42023n/an/a
American RobinTurdidae32024-56%2000
Canada GooseAnatidae22022-58%2000
Wilson's SnipeScolopacidae22024+25%2000
Canada JayCorvidae22024-58%2000
Common RavenCorvidae22024+88%2000
Tree SwallowHirundinidae22016+700%2006
Orange-crowned WarblerParulidae22024-91%2000
Horned GrebePodicipedidae21993n/an/a
Semipalmated PloverCharadriidae22017+100%1993
Bald EagleAccipitridae22024+50%2001
Townsend's WarblerParulidae22022+38%2001
American KestrelFalconidae22000n/an/a
Golden-crowned KingletRegulidae22021-71%2001
American WigeonAnatidae22023-70%2008
OspreyPandionidae22023+100%2008
Chipping SparrowPasserellidae22021-17%2016
Yellow-bellied FlycatcherTyrannidae22019+100%2015
Say's PhoebeTyrannidae22021n/an/a
Herring GullLaridae12024+0%2000
Lesser YellowlegsScolopacidae12000-67%1968
Belted KingfisherAlcedinidae12024+0%1968
Olive-sided FlycatcherTyrannidae12021-40%2000
Hammond's FlycatcherTyrannidae12024-77%2001
White-crowned SparrowPasserellidae12024-87%2000
Fox SparrowPasserellidae12021-79%2006
Violet-green SwallowHirundinidae12016-90%2000
Bank SwallowHirundinidae12021-95%2000
Bohemian WaxwingBombycillidae12024-25%2000

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.