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BBS Route · Montana · BCR 11

Malta Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 97 species recorded across 44 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 →
44Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1975–2025Span
4Observers

Bird Species Found on Montana Malta

Top 40 of 97 species by most recent count. Each links to its species trend.

Species recorded on the Malta 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
Lark BuntingPasserellidae1452025-29%1977
Western MeadowlarkIcteridae862025+83%1977
Franklin's GullLaridae80202117×2005
Red-winged BlackbirdIcteridae572025+57%1977
Horned LarkAlaudidae312025-67%1977
Wilson's PhalaropeScolopacidae202023-35%1986
American White PelicanPelecanidae182018-39%2001
Mourning DoveColumbidae162025-24%1977
Sharp-tailed GrousePhasianidae11201914×1998
Brown-headed CowbirdIcteridae82025-52%1977
Brewer's SparrowPasserellidae82025-62%1980
Eastern KingbirdTyrannidae72025+78%1977
Ring-necked PheasantPhasianidae72025+400%1992
Western KingbirdTyrannidae72025+217%1989
American WigeonAnatidae62024-77%1977
Northern ShovelerAnatidae62024-39%1977
RedheadAnatidae62023-67%1988
MallardAnatidae52024-84%1977
Vesper SparrowPasserellidae52025+336%1980
Blue-winged TealAnatidae42024-90%1979
Yellow-headed BlackbirdIcteridae42024-80%1979
Sage ThrasherMimidae41997+100%1990
Brewer's BlackbirdIcteridae32025-30%1977
Eared GrebePodicipedidae32024+86%1987
Short-eared OwlStrigidae32018+120%1998
Double-crested CormorantPhalacrocoracidae32018-42%1987
Sprague's PipitMotacillidae32022+20%1992
Rock PigeonColumbidae32025+233%2018
Pied-billed GrebePodicipedidae21987+100%1975
Ring-billed GullLaridae22025-50%1977
Green-winged TealAnatidae22016-67%1988
WilletScolopacidae22025-33%1977
KilldeerCharadriidae22025-78%1977
Chestnut-collared LongspurCalcariidae22024-95%1977
Clay-colored SparrowPasserellidae22024+43%1977
Barn SwallowHirundinidae22025-17%1977
CanvasbackAnatidae22011-67%1994
Canada GooseAnatidae22023-74%1987
Swainson's HawkAccipitridae22025+33%1979
Grasshopper SparrowPasserellidae22025-62%1988

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