BirdAnalyst
BBS Route · Montana · BCR 10

Polson Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 124 species recorded across 49 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 →
49Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1972–2025Span
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 MeadowlarkIcteridae1842025+121%1974
Vesper SparrowPasserellidae70202515×1974
Rock PigeonColumbidae402025+755%1984
Brewer's BlackbirdIcteridae292025-44%1974
European StarlingSturnidae272025+355%1974
Black-billed MagpieCorvidae262025+69%1974
Horned LarkAlaudidae222025+300%1974
Brown-headed CowbirdIcteridae212025+248%1974
House SparrowPasseridae192025+188%1991
Savannah SparrowPasserellidae152025+197%1974
Red-winged BlackbirdIcteridae142025+238%1974
Common RavenCorvidae112025+310%1979
Ring-necked PheasantPhasianidae92025-19%1974
Eastern KingbirdTyrannidae82025+300%1975
Grasshopper SparrowPasserellidae82025+10%1990
Yellow-headed BlackbirdIcteridae72019-28%1996
Pine SiskinFringillidae72024-18%1989
Tree SwallowHirundinidae72025-32%1990
White-breasted NuthatchSittidae72019+250%1989
American AvocetRecurvirostridae71997n/an/a
Barn SwallowHirundinidae62025-33%1974
American RobinTurdidae62025+15%1974
American CootRallidae62006-8%1997
RedheadAnatidae51996+150%1990
Sage ThrasherMimidae52025+550%2013
Eurasian Collared-DoveColumbidae52025+17%2017
American KestrelFalconidae42025+133%1974
Brewer's SparrowPasserellidae42025+100%1978
Western KingbirdTyrannidae42024+75%1977
American WigeonAnatidae42000+100%1980
Western Wood-PeweeTyrannidae42025+27%1989
Blue-winged TealAnatidae41999-40%1989
Northern ShovelerAnatidae42006+25%1996
Orange-crowned WarblerParulidae42019+43%1996
Wilson's PhalaropeScolopacidae41997+300%1992
Evening GrosbeakFringillidae41997n/an/a
Long-billed CurlewScolopacidae32025+120%1976
Chipping SparrowPasserellidae32025+175%1980
Cliff SwallowHirundinidae32011-10%1989
Common NighthawkCaprimulgidae32025+300%1980

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