BirdAnalyst
BBS Route · Montana · BCR 10

Heart Butte Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 87 species recorded across 10 survey years, still active.

87Species 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 →
10Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2015–2025Span
1Observers

Bird Species Found on Montana Heart Butte

Top 40 of 87 species by most recent count. Each links to its species trend.

Species recorded on the Heart Butte 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
Vesper SparrowPasserellidae732025-17%2017
Western MeadowlarkIcteridae572025-15%2017
Cliff SwallowHirundinidae442025+2%2017
Black-billed MagpieCorvidae392025-23%2017
European StarlingSturnidae342025-36%2017
American RobinTurdidae262025+97%2017
MallardAnatidae25201925×2016
Brewer's BlackbirdIcteridae242025+35%2017
Long-billed CurlewScolopacidae172025-50%2017
Horned LarkAlaudidae162025+49%2017
White-crowned SparrowPasserellidae152025+55%2017
Savannah SparrowPasserellidae142025+2%2017
Clay-colored SparrowPasserellidae142025+15%2017
Northern House WrenTroglodytidae142025+3%2017
American GoldfinchFringillidae112025+238%2018
Yellow WarblerParulidae82025+19%2017
Red CrossbillFringillidae82017n/an/a
Wilson's SnipeScolopacidae72025-21%2017
Baird's SparrowPasserellidae72019+50%2017
Gray CatbirdMimidae72025+200%2017
Eastern KingbirdTyrannidae62025+117%2018
Common RavenCorvidae62025+0%2017
Western Wood-PeweeTyrannidae52025+122%2017
Clark's NutcrackerCorvidae52025+300%2016
Spotted TowheePasserellidae52025+25%2017
Red-naped SapsuckerPicidae42025+100%2019
Chipping SparrowPasserellidae42025-8%2017
Tree SwallowHirundinidae42025+25%2017
Common YellowthroatParulidae42025-23%2017
Sandhill CraneGruidae32024-43%2017
Sharp-tailed GrousePhasianidae32025+200%2017
American CrowCorvidae32025-20%2017
Brown-headed CowbirdIcteridae32025+64%2018
Mountain ChickadeeParidae32025+0%2017
Mountain BluebirdTurdidae32025+0%2018
Thick-billed LongspurCalcariidae32025-10%2021
Swainson's ThrushTurdidae32025+33%2022
Canada GooseAnatidae22018-83%2015
SoraRallidae22024+0%2016
Marbled GodwitScolopacidae22025+17%2017

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