BirdAnalyst
BBS Route · Wyoming · BCR 10

Colter Bay 2 Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 85 species recorded across 6 survey years, still active.

85Species 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 →
6Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
2019–2025Span
2Observers

Bird Species Found on Wyoming Colter Bay 2

Top 40 of 85 species by most recent count. Each links to its species trend.

Species recorded on the Colter Bay 2 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
American RobinTurdidae602025-17%2022
Chipping SparrowPasserellidae432025+60%2022
Pine SiskinFringillidae402025+259%2022
Brewer's SparrowPasserellidae382025+89%2022
Warbling VireoVireonidae322025+293%2022
Ruby-crowned KingletRegulidae322025-25%2022
Black-capped ChickadeeParidae302021-3%2019
Western TanagerCardinalidae282025+85%2022
Cliff SwallowHirundinidae222025+37%2022
Swainson's ThrushTurdidae202025-29%2022
Vesper SparrowPasserellidae152025-24%2022
Mountain ChickadeeParidae142025+106%2022
Yellow WarblerParulidae132025-3%2022
White-crowned SparrowPasserellidae122025-13%2022
Red CrossbillFringillidae112025-14%2022
Common RavenCorvidae102025-39%2022
Lazuli BuntingCardinalidae102025+900%2021
Green-tailed TowheePasserellidae92025+104%2022
MacGillivray's WarblerParulidae52025+180%2022
Wilson's WarblerParulidae52022+400%2021
American CrowCorvidae42025+200%2022
Red-winged BlackbirdIcteridae42019n/an/a
Song SparrowPasserellidae42025-68%2022
Tree SwallowHirundinidae42025-58%2022
Common YellowthroatParulidae42025+60%2022
American White PelicanPelecanidae42025+25%2022
Brown-headed CowbirdIcteridae42025+300%2021
Clark's NutcrackerCorvidae42025+100%2023
Hermit ThrushTurdidae42025-46%2023
Sandhill CraneGruidae32025-43%2021
Broad-tailed HummingbirdTrochilidae32024+0%2021
Red-breasted NuthatchSittidae32025+27%2022
European StarlingSturnidae32021n/an/a
Lincoln's SparrowPasserellidae32025+83%2022
Hammond's FlycatcherTyrannidae32023n/an/a
Turkey VultureCathartidae22025+100%2019
Hairy WoodpeckerPicidae22024+100%2019
Willow FlycatcherTyrannidae22025+50%2022
Savannah SparrowPasserellidae22025-79%2022
Black-headed GrosbeakCardinalidae22025-50%2022

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