BirdAnalyst
BBS Route · Montana · BCR 10

Willow Creek 2 Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 122 species recorded across 40 survey years, still active.

122Species 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 →
40Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1982–2024Span
4Observers

Bird Species Found on Montana Willow Creek 2

Top 40 of 122 species by most recent count. Each links to its species trend.

Species recorded on the Willow Creek 2 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
Cliff SwallowHirundinidae1092024-29%1984
Red-winged BlackbirdIcteridae712024+112%1984
European StarlingSturnidae672024-66%1984
Western MeadowlarkIcteridae662024-26%1984
Savannah SparrowPasserellidae322024+426%1984
Bank SwallowHirundinidae262024+300%1988
American RobinTurdidae262024-26%1984
American White PelicanPelecanidae262024+128%2001
Black-billed MagpieCorvidae252024+32%1984
House SparrowPasseridae232024+8%1984
Violet-green SwallowHirundinidae212018+650%2001
Mourning DoveColumbidae202024-46%1984
Vesper SparrowPasserellidae202024-12%1984
Rock PigeonColumbidae182024+19%1984
KilldeerCharadriidae162024+9%1984
Common RavenCorvidae162024+271%1989
Sandhill CraneGruidae132024+126%1984
Eurasian Collared-DoveColumbidae132024+12%2010
Yellow-headed BlackbirdIcteridae112024+77%1984
Ring-billed GullLaridae112014-73%2000
Brown-headed CowbirdIcteridae102024+267%1984
Brewer's SparrowPasserellidae102024+214%1984
Horned LarkAlaudidae92024+41%1984
Brewer's BlackbirdIcteridae92024+2%1984
Western Wood-PeweeTyrannidae82024+300%1985
Western KingbirdTyrannidae72024+54%1984
Common GrackleIcteridae72024+13%1984
Spotted TowheePasserellidae72024+375%1984
Yellow WarblerParulidae72024+190%1984
Northern House WrenTroglodytidae72024-4%1984
Wilson's SnipeScolopacidae62024-35%1984
Eastern KingbirdTyrannidae62024+10%1984
Clark's NutcrackerCorvidae62021+38%1988
Marsh WrenTroglodytidae62024+275%1990
Northern ShovelerAnatidae62022+43%1993
House FinchFringillidae62024+36%1993
Red-tailed HawkAccipitridae52024+90%1985
Lesser ScaupAnatidae52006-10%1993
Canyon WrenTroglodytidae52001+400%1998
Lark SparrowPasserellidae42024+100%1988

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