BirdAnalyst
BBS Route · Alaska · BCR 4

Birch Lake Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 77 species recorded across 27 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 →
27Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1968–2025Span
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 ThrushTurdidae622025-40%2000
Alder FlycatcherTyrannidae182025-84%2000
American RobinTurdidae162025-53%2000
Cliff SwallowHirundinidae152025-34%2003
Ruby-crowned KingletRegulidae122025-17%2001
Varied ThrushTurdidae122025-41%2000
Pine SiskinFringillidae122021+333%2004
Lincoln's SparrowPasserellidae82025+0%2000
Yellow WarblerParulidae82025-80%2001
Townsend's WarblerParulidae82025+100%2001
Canada JayCorvidae72025-32%2000
Lesser ScaupAnatidae72005n/an/a
Northern WaterthrushParulidae52021-33%2001
Common GoldeneyeAnatidae52018+400%2000
Ring-necked DuckAnatidae52001n/an/a
Orange-crowned WarblerParulidae42025-83%2000
Black-capped ChickadeeParidae42022+100%2001
Chipping SparrowPasserellidae42025+33%2016
Surf ScoterAnatidae42023n/an/a
Red-throated LoonGaviidae32025+200%2023
Canada GooseAnatidae22022-58%2000
Hammond's FlycatcherTyrannidae22025-77%2001
Common RavenCorvidae22024+88%2000
White-crowned SparrowPasserellidae22025-91%2000
Tree SwallowHirundinidae22016+700%2006
Horned GrebePodicipedidae21993n/an/a
Semipalmated PloverCharadriidae22017+100%1993
Bald EagleAccipitridae22024+50%2001
American KestrelFalconidae22000n/an/a
Golden-crowned KingletRegulidae22021-71%2001
American WigeonAnatidae22023-70%2008
OspreyPandionidae22023+100%2008
Yellow-bellied FlycatcherTyrannidae22019+100%2015
Say's PhoebeTyrannidae22021n/an/a
Herring GullLaridae12024+0%2000
Wilson's SnipeScolopacidae12025+0%2000
Lesser YellowlegsScolopacidae12000-67%1968
Belted KingfisherAlcedinidae12024+0%1968
Olive-sided FlycatcherTyrannidae12021-40%2000
Fox SparrowPasserellidae12021-79%2006

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