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BBS Route · Montana · BCR 10

Polson Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 124 species recorded across 48 survey years, still active.

124Species 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 →
48Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1972–2024Span
4Observers

Bird Species Found on Montana Polson

Top 40 of 124 species by most recent count. Each links to its species trend.

Species recorded on the Polson 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
Western MeadowlarkIcteridae2012024+138%1974
Vesper SparrowPasserellidae131202420×1974
European StarlingSturnidae682024+436%1974
Brewer's BlackbirdIcteridae492024-48%1974
Rock PigeonColumbidae492024+564%1984
House SparrowPasseridae442024+188%1991
Black-billed MagpieCorvidae432024+33%1974
Red-winged BlackbirdIcteridae352024+335%1974
Savannah SparrowPasserellidae282024+262%1974
Common RavenCorvidae232024+270%1979
Horned LarkAlaudidae162024+175%1974
Brown-headed CowbirdIcteridae132024+316%1974
Mountain BluebirdTurdidae132024+180%1992
Mourning DoveColumbidae102024+119%1974
Red-tailed HawkAccipitridae102024+667%1983
American KestrelFalconidae82024+167%1974
Tree SwallowHirundinidae82024-18%1990
Sage ThrasherMimidae82024+700%1994
KilldeerCharadriidae72024+55%1974
Yellow-headed BlackbirdIcteridae72019-28%1996
American RobinTurdidae72024+85%1974
Pine SiskinFringillidae72024-18%1989
Grasshopper SparrowPasserellidae72024+17%1990
White-breasted NuthatchSittidae72019+250%1989
American AvocetRecurvirostridae71997n/an/a
Long-billed CurlewScolopacidae62024+80%1976
Gray PartridgePhasianidae62024+250%1989
Clay-colored SparrowPasserellidae62024+122%2003
American CootRallidae62006-8%1997
Ring-necked PheasantPhasianidae52024-57%1974
Eastern KingbirdTyrannidae52024+500%1975
Brewer's SparrowPasserellidae52024+180%1978
Lazuli BuntingCardinalidae52024+200%1995
RedheadAnatidae51996+150%1990
Western KingbirdTyrannidae42024+75%1977
American WigeonAnatidae42000+100%1980
Blue-winged TealAnatidae41999-40%1989
Northern ShovelerAnatidae42006+25%1996
Orange-crowned WarblerParulidae42019+43%1996
Wilson's PhalaropeScolopacidae41997+300%1992

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