BirdAnalyst
BBS Route · Montana · BCR 10

Willow Creek 2 Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 122 species recorded across 41 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 →
41Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1982–2025Span
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
Red-winged BlackbirdIcteridae782025+126%1984
Sandhill CraneGruidae722025+304%1984
Western MeadowlarkIcteridae642025-28%1984
Vesper SparrowPasserellidae502025+3%1984
Black-billed MagpieCorvidae492025+57%1984
Savannah SparrowPasserellidae412025+474%1984
Cliff SwallowHirundinidae332025-14%1984
European StarlingSturnidae272025-86%1984
Brewer's SparrowPasserellidae222025+429%1984
Violet-green SwallowHirundinidae212018+650%2001
Tree SwallowHirundinidae202025+125%1984
Mourning DoveColumbidae182025-40%1984
Yellow WarblerParulidae172025+250%1984
Eastern KingbirdTyrannidae142025+50%1984
House SparrowPasseridae132025-14%1984
Western Wood-PeweeTyrannidae132025+325%1985
Eurasian Collared-DoveColumbidae132025+23%2010
Horned LarkAlaudidae122025+13%1984
Yellow-headed BlackbirdIcteridae112024+77%1984
House FinchFringillidae112025+109%1993
Spotted TowheePasserellidae102025+525%1984
Rock PigeonColumbidae92025+43%1984
Northern House WrenTroglodytidae92025-4%1984
American RobinTurdidae82025-47%1984
American GoldfinchFringillidae82025-29%1986
Ring-billed GullLaridae82025-54%2013
American CrowCorvidae72025+125%1984
Turkey VultureCathartidae72025-44%1989
Marsh WrenTroglodytidae72025+375%1990
Common GrackleIcteridae62025+13%1984
Bank SwallowHirundinidae62025+325%1988
Clark's NutcrackerCorvidae62021+38%1988
Northern ShovelerAnatidae62022+43%1993
American White PelicanPelecanidae62025+150%2001
KilldeerCharadriidae52025-3%1984
Ring-necked PheasantPhasianidae52025-68%1984
Brown-headed CowbirdIcteridae52025+267%1984
Lesser ScaupAnatidae52006-10%1993
Canyon WrenTroglodytidae52001+400%1998
Wilson's SnipeScolopacidae42025-60%1984

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