BirdAnalyst
BBS Route · Montana · BCR 11

Saco Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 97 species recorded across 10 survey years, still active.

97Species 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
2Observers

Bird Species Found on Montana Saco

Top 40 of 97 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 MeadowlarkIcteridae2072025+31%2017
Lark BuntingPasserellidae1642025+49%2017
Horned LarkAlaudidae872025+41%2017
Cliff SwallowHirundinidae492025+124%2017
Grasshopper SparrowPasserellidae422025+4%2017
Brewer's BlackbirdIcteridae392025+104%2017
Mourning DoveColumbidae382025+132%2017
Chestnut-collared LongspurCalcariidae382025+115%2017
Vesper SparrowPasserellidae302025-25%2017
Red-winged BlackbirdIcteridae272025+175%2017
Brown-headed CowbirdIcteridae222025-21%2017
Eastern KingbirdTyrannidae212025+344%2017
Marbled GodwitScolopacidae132025+80%2017
Common GrackleIcteridae112025+317%2017
Ring-necked PheasantPhasianidae102025-25%2017
MallardAnatidae92025+411%2017
Long-billed CurlewScolopacidae82025-43%2017
Western KingbirdTyrannidae82025+92%2017
House SparrowPasseridae82025+100%2019
Canada GooseAnatidae72025-21%2019
California GullLaridae62023+150%2016
Wilson's PhalaropeScolopacidae62024+50%2019
GadwallAnatidae52025+60%2018
Yellow WarblerParulidae52025-17%2017
Sharp-tailed GrousePhasianidae52025+170%2018
KilldeerCharadriidae42025-13%2017
Yellow-headed BlackbirdIcteridae42025+75%2018
Savannah SparrowPasserellidae42024-67%2018
Ring-billed GullLaridae42025+33%2021
Brown ThrasherMimidae42025+133%2018
Blue-winged TealAnatidae42019n/an/a
CanvasbackAnatidae42019n/an/a
Upland SandpiperScolopacidae32025-53%2018
Turkey VultureCathartidae32017+200%2015
Northern HarrierAccipitridae32024+75%2017
Northern House WrenTroglodytidae32024-20%2017
Pied-billed GrebePodicipedidae22023-33%2015
American WigeonAnatidae22022+100%2015
SoraRallidae22024+220%2019
American KestrelFalconidae22025+75%2019

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