BirdAnalyst
BBS Route · Montana · BCR 17

Bull Mtn. Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 77 species recorded across 16 survey years, still active.

77Species 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 →
16Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1995–2021Span
4Observers

Bird Species Found on Montana Bull Mtn.

Top 40 of 77 species by most recent count. Each links to its species trend.

Species recorded on the Bull Mtn. 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
Brewer's BlackbirdIcteridae202021+86%1999
American RobinTurdidae172021-45%1999
Mountain BluebirdTurdidae172021+41%1999
Mourning DoveColumbidae162021+48%1999
White-throated SwiftApodidae142009+100%2008
Western MeadowlarkIcteridae112021-84%1999
European StarlingSturnidae72021+286%2001
Wild TurkeyPhasianidae72021+267%2008
Chipping SparrowPasserellidae52014+206%1999
Spotted TowheePasserellidae52019+0%1999
Black-capped ChickadeeParidae52021+14%1999
Rock WrenTroglodytidae52021-33%2008
Pine SiskinFringillidae42019+36%2014
Violet-green SwallowHirundinidae42021+7%2002
Rock PigeonColumbidae32021-88%2003
Red-winged BlackbirdIcteridae32021+175%1999
Red CrossbillFringillidae32019-76%2013
Lark SparrowPasserellidae32016-43%1999
Cliff SwallowHirundinidae32019-15%1999
Northern House WrenTroglodytidae32021-88%1999
KilldeerCharadriidae32021+14%2013
Turkey VultureCathartidae32019-29%2002
Common NighthawkCaprimulgidae32021-14%2002
Black-billed MagpieCorvidae32021-53%2000
Brown-headed CowbirdIcteridae32021-77%2000
MallardAnatidae32021n/an/a
Cassin's KingbirdTyrannidae22021-69%1999
American GoldfinchFringillidae22019+17%2001
Black-headed GrosbeakCardinalidae22021+0%2000
White-breasted NuthatchSittidae22021+43%2000
Brewer's SparrowPasserellidae22019-33%2008
Bank SwallowHirundinidae22021+750%2009
Yellow WarblerParulidae22019-46%2000
Wilson's SnipeScolopacidae22021-30%2014
Gray CatbirdMimidae22019+33%2004
Prairie FalconFalconidae22009+100%2008
Least FlycatcherTyrannidae22021-20%2014
Green-tailed TowheePasserellidae22014+100%2013
Common YellowthroatParulidae22019-50%2013
Ferruginous HawkAccipitridae22016n/an/a

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