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BBS Route · Alaska · BCR 4

Ruby Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 48 species recorded across 31 survey years, still active.

48Species 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
3Observers

Bird Species Found on Alaska Ruby

Top 40 of 48 species by most recent count. Each links to its species trend.

Species recorded on the Ruby 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 ThrushTurdidae842025-8%1996
Alder FlycatcherTyrannidae592025+63%1996
White-crowned SparrowPasserellidae262025+135%1996
Varied ThrushTurdidae262025+67%1996
Canada JayCorvidae19202513×1996
Fox SparrowPasserellidae192025+192%1996
Northern WaterthrushParulidae182025+62%1997
Common RavenCorvidae132025+160%1996
Orange-crowned WarblerParulidae112025+10%1996
Blackpoll WarblerParulidae92025+127%1997
Lincoln's SparrowPasserellidae92025+47%1998
Canada GooseAnatidae92002n/an/a
Yellow WarblerParulidae72025-55%1996
Ruby-crowned KingletRegulidae72025-53%1996
Ruffed GrousePhasianidae32025+100%2003
American RobinTurdidae32025+78%1997
Bank SwallowHirundinidae32008n/an/a
Downy WoodpeckerPicidae32021+14%2015
Western Wood-PeweeTyrannidae32025+200%2017
Wilson's SnipeScolopacidae22025+33%2000
Gray-cheeked ThrushTurdidae22025-11%1996
Olive-sided FlycatcherTyrannidae22025+40%2001
Pine SiskinFringillidae22025+50%2012
Black-capped ChickadeeParidae22024+67%2005
Glaucous GullLaridae22007n/an/a
Northern WheatearMuscicapidae22024n/an/a
Least SandpiperScolopacidae22025n/an/a
Hammond's FlycatcherTyrannidae12025-50%1996
Savannah SparrowPasserellidae12021-25%1999
Wilson's WarblerParulidae12025-67%1996
American Tree SparrowPasserellidae12023+0%2003
White-winged CrossbillFringillidae12024-88%2001
Bohemian WaxwingBombycillidae12010+100%2002
Solitary SandpiperScolopacidae12024+0%2006
Red-tailed HawkAccipitridae12019+0%2001
Great Horned OwlStrigidae12021+0%2004
Pine GrosbeakFringillidae12005+0%2001
Boreal ChickadeeParidae12023-25%2010
Tree SwallowHirundinidae12025-29%2004
Belted KingfisherAlcedinidae12021+0%2003

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