BirdAnalyst
BBS Route · Montana · BCR 11

Saco Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 96 species recorded across 9 survey years, still active.

96Species 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 →
9Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2015–2024Span
2Observers

Bird Species Found on Montana Saco

Top 40 of 96 species by most recent count. Each links to its species trend.

Species recorded on the Saco 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 MeadowlarkIcteridae1982024+32%2017
Horned LarkAlaudidae852024+31%2017
Lark BuntingPasserellidae562024-57%2017
Grasshopper SparrowPasserellidae432024-15%2017
Cliff SwallowHirundinidae422024+107%2017
Red-winged BlackbirdIcteridae402024+130%2017
Brewer's BlackbirdIcteridae332024+85%2017
Eastern KingbirdTyrannidae282024+263%2017
Vesper SparrowPasserellidae252024-35%2017
Chestnut-collared LongspurCalcariidae242024+49%2017
Mourning DoveColumbidae232024+95%2017
MallardAnatidae192023+322%2017
European StarlingSturnidae172024-83%2017
Brown-headed CowbirdIcteridae162024-21%2017
Northern PintailAnatidae122023+300%2015
Common NighthawkCaprimulgidae122023+64%2018
Western KingbirdTyrannidae122024+42%2017
Common GrackleIcteridae112024+233%2017
BobolinkIcteridae82024+5%2017
Marbled GodwitScolopacidae72024+40%2017
California GullLaridae62023+150%2016
Wilson's PhalaropeScolopacidae62024+50%2019
Baird's SparrowPasserellidae52024-78%2017
Yellow WarblerParulidae52024-33%2017
Upland SandpiperScolopacidae42024-65%2018
Savannah SparrowPasserellidae42024-67%2018
Barn SwallowHirundinidae42023-48%2017
Sprague's PipitMotacillidae42024-83%2017
Baltimore OrioleIcteridae42023+67%2019
Canada GooseAnatidae42023+7%2019
Blue-winged TealAnatidae42019n/an/a
CanvasbackAnatidae42019n/an/a
Long-billed CurlewScolopacidae32024-32%2017
Turkey VultureCathartidae32017+200%2015
Northern HarrierAccipitridae32024+75%2017
Lark SparrowPasserellidae32024-52%2018
Northern House WrenTroglodytidae32024-20%2017
Loggerhead ShrikeLaniidae32024+0%2022
Pied-billed GrebePodicipedidae22023-33%2015
American WigeonAnatidae22022+100%2015

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