BirdAnalyst
BBS Route · Montana · BCR 11

Gildford Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 71 species recorded across 7 survey years, still active.

71Species 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 →
7Years 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 Gildford

Top 40 of 71 species by most recent count. Each links to its species trend.

Species recorded on the Gildford 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
Horned LarkAlaudidae1982024-8%2017
Western MeadowlarkIcteridae482024-4%2017
Vesper SparrowPasserellidae372024-48%2017
Thick-billed LongspurCalcariidae332024+46%2017
Red-winged BlackbirdIcteridae322024+124%2017
Savannah SparrowPasserellidae222024-43%2017
Long-billed CurlewScolopacidae172024+7%2017
Mourning DoveColumbidae142024-17%2017
Brown-headed CowbirdIcteridae132024+125%2017
House SparrowPasseridae102024-47%2017
Common GrackleIcteridae92024+180%2019
Grasshopper SparrowPasserellidae82024-11%2017
American CrowCorvidae72024-56%2017
Canada GooseAnatidae72023+125%2018
Brewer's BlackbirdIcteridae62024-35%2017
Marbled GodwitScolopacidae52024-33%2018
KilldeerCharadriidae52023-13%2017
Wilson's PhalaropeScolopacidae52023+400%2016
Franklin's GullLaridae52024+400%2017
GadwallAnatidae42024-17%2019
Sharp-tailed GrousePhasianidae42019-13%2017
Chestnut-collared LongspurCalcariidae42024+11%2017
American RobinTurdidae42024-8%2017
American AvocetRecurvirostridae42023+0%2018
Cliff SwallowHirundinidae42019n/an/a
European StarlingSturnidae32024-84%2017
Eurasian Collared-DoveColumbidae32023+250%2017
Rock PigeonColumbidae32023+21%2018
Upland SandpiperScolopacidae32023+200%2018
MallardAnatidae22024-11%2018
Western KingbirdTyrannidae22024-11%2017
Barn SwallowHirundinidae22024+25%2017
Loggerhead ShrikeLaniidae22019+0%2016
Ring-billed GullLaridae22017+0%2016
Swainson's HawkAccipitridae22024-20%2017
American KestrelFalconidae22017+100%2016
Eastern KingbirdTyrannidae22024+167%2017
Baird's SparrowPasserellidae22023+50%2018
Brewer's SparrowPasserellidae22016n/an/a
Sprague's PipitMotacillidae22018+0%2016

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