BirdAnalyst
BBS Route · Montana · BCR 10

Thompson Riv Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 84 species recorded across 29 survey years, still active.

84Species 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 →
29Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1993–2024Span
6Observers

Bird Species Found on Montana Thompson Riv

Top 40 of 84 species by most recent count. Each links to its species trend.

Species recorded on the Thompson Riv 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
Swainson's ThrushTurdidae762024+82%1995
Pine SiskinFringillidae392024-65%1995
Song SparrowPasserellidae322024+24%1995
American RobinTurdidae302024-32%1995
Western TanagerCardinalidae242024+571%1996
Cedar WaxwingBombycillidae232024+173%1995
Hammond's FlycatcherTyrannidae222024-21%1995
Red-breasted NuthatchSittidae142024+50%1995
Northern Rough-winged SwallowHirundinidae102008n/an/a
Warbling VireoVireonidae92024+154%1995
Ruffed GrousePhasianidae82021+117%1998
Willow FlycatcherTyrannidae52024-37%1995
MacGillivray's WarblerParulidae52024-67%1995
Golden-crowned KingletRegulidae52024-42%1995
Lazuli BuntingCardinalidae52016+400%2014
Common NighthawkCaprimulgidae42009+25%1994
Yellow WarblerParulidae42024-48%1995
Mountain ChickadeeParidae42024+40%1996
Canada JayCorvidae42019+20%1998
Tree SwallowHirundinidae42024+140%2000
American GoldfinchFringillidae42008+300%2003
Dusky FlycatcherTyrannidae32022+540%1995
Common RavenCorvidae32024+0%1995
Cassin's FinchFringillidae32022+0%1995
Red CrossbillFringillidae32023-40%1996
Common YellowthroatParulidae32024+25%1995
Chipping SparrowPasserellidae32024-7%1996
Brown-headed CowbirdIcteridae32019n/an/a
Bald EagleAccipitridae32023+200%2021
Great Blue HeronArdeidae21995+100%1993
Spotted SandpiperScolopacidae22021-20%1995
Red-naped SapsuckerPicidae22023+33%1998
Pacific WrenTroglodytidae22024-25%1995
White-breasted NuthatchSittidae22005-55%1995
Black-capped ChickadeeParidae22024+0%1995
Hermit ThrushTurdidae22014+50%1999
Black-headed GrosbeakCardinalidae22021+175%2010
Common MerganserAnatidae22021-56%2004
Violet-green SwallowHirundinidae22021+100%1999
MallardAnatidae22004+100%1999

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