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BBS Route · Alaska · BCR 4

Manley Ht Sp Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 45 species recorded across 29 survey years, still active.

45Species 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 →
29Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1993–2022Span
6Observers

Bird Species Found on Alaska Manley Ht Sp

Top 40 of 45 species by most recent count. Each links to its species trend.

Species recorded on the Manley Ht Sp 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 ThrushTurdidae1162022+94%1995
Alder FlycatcherTyrannidae352022-63%1995
White-crowned SparrowPasserellidae292022+41%1995
American RobinTurdidae222022-29%1995
Orange-crowned WarblerParulidae82022-67%1995
American Tree SparrowPasserellidae62022-30%1994
Olive-sided FlycatcherTyrannidae52022+160%1996
Varied ThrushTurdidae52021+38%1995
White-winged CrossbillFringillidae52022-69%1997
Canada JayCorvidae42022-28%1995
Ruby-crowned KingletRegulidae42021+125%1995
Black-capped ChickadeeParidae42022-25%1997
Greater White-fronted GooseAnatidae42007n/an/a
Violet-green SwallowHirundinidae32022-50%2004
Yellow WarblerParulidae32022-65%1995
Gray-cheeked ThrushTurdidae31999-44%1995
Hermit ThrushTurdidae32022+300%1996
Downy WoodpeckerPicidae31999n/an/a
Hammond's FlycatcherTyrannidae22021+15%1995
Common RavenCorvidae22021-14%1998
Northern WaterthrushParulidae22022-67%1995
Tree SwallowHirundinidae22022+14%1997
Western Wood-PeweeTyrannidae22022+0%2000
Pine GrosbeakFringillidae22019+0%2006
Canada GooseAnatidae21998n/an/a
Solitary SandpiperScolopacidae22022+50%2005
Boreal ChickadeeParidae22022+25%2008
American Three-toed WoodpeckerPicidae22019+50%2016
Red-breasted MerganserAnatidae22015n/an/a
Great Horned OwlStrigidae22018n/an/a
Wilson's SnipeScolopacidae12022+13%1995
Black-billed MagpieCorvidae11993n/an/a
Lincoln's SparrowPasserellidae12022+186%1995
Wilson's WarblerParulidae12019+11%1995
Fox SparrowPasserellidae12022-86%1996
Sandhill CraneGruidae12018-25%2007
Spotted SandpiperScolopacidae12022+0%1997
Bohemian WaxwingBombycillidae12014+33%2000
Townsend's WarblerParulidae12022+20%2011
Ruffed GrousePhasianidae12016+0%2005

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