BirdAnalyst
BBS Route · Montana · BCR 10

Arlee Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 131 species recorded across 54 survey years, still active.

131Species 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 →
54Years 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
9Observers

Bird Species Found on Montana Arlee

Top 40 of 131 species by most recent count. Each links to its species trend.

Species recorded on the Arlee 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
American RobinTurdidae442025+31%1970
Swainson's ThrushTurdidae312025-20%1971
Pine SiskinFringillidae282025-46%1970
Warbling VireoVireonidae272025+113%1970
Western TanagerCardinalidae182025+53%1970
Chipping SparrowPasserellidae122025-51%1970
House SparrowPasseridae111987+450%1985
Ruby-crowned KingletRegulidae92025-65%1970
Dusky FlycatcherTyrannidae92025+171%1987
Yellow WarblerParulidae82025+80%1970
Black-capped ChickadeeParidae82025+31%1970
Spotted SandpiperScolopacidae82025+117%1975
Orange-crowned WarblerParulidae82025+214%1980
Least FlycatcherTyrannidae82025+30%2013
Common RavenCorvidae62024+56%1970
Brown-headed CowbirdIcteridae62025+150%1982
Red CrossbillFringillidae62025-21%1982
Nashville WarblerParulidae62025+120%1986
Townsend's WarblerParulidae42025-42%1970
Common YellowthroatParulidae42024-73%1970
Wilson's WarblerParulidae42025+78%1972
Pileated WoodpeckerPicidae42013+100%1976
European StarlingSturnidae42015+125%2005
Cliff SwallowHirundinidae41985+300%1984
Willow FlycatcherTyrannidae32025-78%1970
Steller's JayCorvidae32022-63%1971
Red-winged BlackbirdIcteridae32025-11%1970
Brewer's BlackbirdIcteridae32023+20%1973
Pacific WrenTroglodytidae32025+200%1976
Townsend's SolitaireTurdidae32025-69%1970
White-throated SwiftApodidae31969n/an/a
Cassin's FinchFringillidae32015+800%1975
Lazuli BuntingCardinalidae32025+140%1974
Double-crested CormorantPhalacrocoracidae31988n/an/a
Pygmy NuthatchSittidae32013-29%2005
Wilson's SnipeScolopacidae22025-20%1971
Western Wood-PeweeTyrannidae22024+175%1970
Violet-green SwallowHirundinidae22024-50%1984
Red-breasted NuthatchSittidae22025-30%1970
Golden-crowned KingletRegulidae22025+300%1976

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