BirdAnalyst
BBS Route · Montana · BCR 10

Arlee Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 131 species recorded across 53 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 →
53Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1968–2024Span
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
Warbling VireoVireonidae432024+143%1970
American RobinTurdidae392024+32%1970
Pine SiskinFringillidae332024-53%1970
Swainson's ThrushTurdidae332024-23%1971
Chipping SparrowPasserellidae152024-38%1970
Western TanagerCardinalidae142024+67%1970
Golden-crowned KingletRegulidae132024+275%1976
MacGillivray's WarblerParulidae112024+250%1970
House SparrowPasseridae111987+450%1985
Hammond's FlycatcherTyrannidae102024+238%1973
Townsend's WarblerParulidae82024-23%1970
Olive-sided FlycatcherTyrannidae72024+29%1970
Mountain ChickadeeParidae72024+8%1970
Common RavenCorvidae62024+56%1970
Ruby-crowned KingletRegulidae62024-64%1970
Black-headed GrosbeakCardinalidae62024+100%1975
Orange-crowned WarblerParulidae62024+171%1980
Yellow WarblerParulidae52024+80%1970
Black-capped ChickadeeParidae52024+25%1970
Wilson's WarblerParulidae52023+67%1972
Common YellowthroatParulidae42024-73%1970
Spotted SandpiperScolopacidae42024+33%1975
Song SparrowPasserellidae42024+157%1972
Pileated WoodpeckerPicidae42013+100%1976
Lazuli BuntingCardinalidae42024+200%1974
European StarlingSturnidae42015+125%2005
Cliff SwallowHirundinidae41985+300%1984
Steller's JayCorvidae32022-63%1971
Brewer's BlackbirdIcteridae32023+20%1973
Pacific WrenTroglodytidae32024+200%1976
Red-breasted NuthatchSittidae32024+20%1970
Townsend's SolitaireTurdidae32024-62%1970
White-throated SwiftApodidae31969n/an/a
Cassin's FinchFringillidae32015+800%1975
Red CrossbillFringillidae32023-50%1982
Lewis's WoodpeckerPicidae32021+25%2014
Dusky FlycatcherTyrannidae32024+71%1987
Double-crested CormorantPhalacrocoracidae31988n/an/a
Pygmy NuthatchSittidae32013-29%2005
Western Wood-PeweeTyrannidae22024+175%1970

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