BirdAnalyst
BBS Route · Montana · BCR 11

Gildford Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 72 species recorded across 8 survey years, still active.

72Species 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 →
8Years 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 Gildford

Top 40 of 72 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 LarkAlaudidae2112025+7%2017
Vesper SparrowPasserellidae522025-42%2017
Western MeadowlarkIcteridae512025-15%2017
Thick-billed LongspurCalcariidae322025+33%2017
Red-winged BlackbirdIcteridae232025+146%2017
Brewer's BlackbirdIcteridae182025-13%2017
Savannah SparrowPasserellidae152025-61%2017
Brown-headed CowbirdIcteridae132024+125%2017
Barn SwallowHirundinidae122025+38%2017
Mourning DoveColumbidae102025-41%2017
Lark BuntingPasserellidae92025+800%2016
House SparrowPasseridae82025-56%2017
Long-billed CurlewScolopacidae72025-7%2017
American RobinTurdidae72025+0%2017
Canada GooseAnatidae72023+125%2018
Common GrackleIcteridae72025+220%2019
Marbled GodwitScolopacidae52025-12%2019
Grasshopper SparrowPasserellidae52025+11%2017
Wilson's PhalaropeScolopacidae52023+400%2016
European StarlingSturnidae52025-76%2018
Franklin's GullLaridae52024+400%2017
GadwallAnatidae42024-17%2019
Sharp-tailed GrousePhasianidae42019-13%2017
American AvocetRecurvirostridae42023+0%2018
Cliff SwallowHirundinidae42019n/an/a
KilldeerCharadriidae32025-17%2018
Western KingbirdTyrannidae32025-22%2017
American CrowCorvidae32025-69%2017
Chestnut-collared LongspurCalcariidae32025+0%2017
Swainson's HawkAccipitridae32025-13%2018
Rock PigeonColumbidae32023+21%2018
Upland SandpiperScolopacidae32023+200%2018
WilletScolopacidae22025+50%2023
Ring-necked PheasantPhasianidae22025+0%2017
Loggerhead ShrikeLaniidae22019+0%2016
Ring-billed GullLaridae22025+0%2016
Northern HarrierAccipitridae22025-25%2019
American KestrelFalconidae22017+100%2016
Baird's SparrowPasserellidae22023+50%2018
Brewer's SparrowPasserellidae22016n/an/a

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