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BBS Route · Alaska · BCR 5

Harlequin L. Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 64 species recorded across 30 survey years, still active.

64Species 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 →
30Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1993–2024Span
4Observers

Bird Species Found on Alaska Harlequin L.

Top 40 of 64 species by most recent count. Each links to its species trend.

Species recorded on the Harlequin L. 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
Hermit ThrushTurdidae762024+52%1995
Varied ThrushTurdidae592024+1%1995
White-winged CrossbillFringillidae462023+346%1998
Wilson's WarblerParulidae252024-27%1995
Pacific WrenTroglodytidae222024-45%1995
Fox SparrowPasserellidae202024+165%1995
Orange-crowned WarblerParulidae202024-54%1995
Lincoln's SparrowPasserellidae102024+115%1995
Red CrossbillFringillidae102023-56%1998
Steller's JayCorvidae92024+26%1996
Ruby-crowned KingletRegulidae82024-27%1995
Pine SiskinFringillidae82024+4%1997
Violet-green SwallowHirundinidae82005n/an/a
Wilson's SnipeScolopacidae52023+220%1998
Alder FlycatcherTyrannidae52024+125%1997
American RobinTurdidae52024-46%1995
Chestnut-backed ChickadeeParidae42024-32%1995
Golden-crowned KingletRegulidae42024-33%1995
Short-billed GullLaridae42018+20%2011
Hairy WoodpeckerPicidae42024+100%1996
Common YellowthroatParulidae42024+33%1998
Greater YellowlegsScolopacidae32024+80%1995
Northern Saw-whet OwlStrigidae32003+100%1994
Red-breasted SapsuckerPicidae32024+0%1995
Brown CreeperCerthiidae22024-14%1995
Marbled MurreletAlcidae22024-61%1996
Song SparrowPasserellidae22024+100%2001
Short-billed DowitcherScolopacidae22011+100%1998
Red-breasted MerganserAnatidae22005n/an/a
Lesser YellowlegsScolopacidae22011+100%2006
Solitary SandpiperScolopacidae22023+67%2019
Common LoonGaviidae22017n/an/a
Common MerganserAnatidae12024-43%1995
MallardAnatidae11993n/an/a
Trumpeter SwanAnatidae12005+0%1993
Red-tailed HawkAccipitridae12002-33%1994
Rufous HummingbirdTrochilidae12024-40%1995
Savannah SparrowPasserellidae12024+50%1994
Tree SwallowHirundinidae12024-43%1995
Northern WaterthrushParulidae12021+0%1995

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