BBS Route · Wyoming · BCR 10

Colter Bay 2 Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 83 species recorded across 5 survey years, still active.

Bird Species Found on Wyoming Colter Bay 2

Top 40 of 83 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
Pine SiskinFringillidae632024+838%2021
Ruby-crowned KingletRegulidae542024-30%2021
Brewer's SparrowPasserellidae482024+122%2021
Chipping SparrowPasserellidae462024+76%2021
American RobinTurdidae382024-40%2021
Warbling VireoVireonidae362024+640%2021
Swainson's ThrushTurdidae362024-33%2021
Black-capped ChickadeeParidae302021-3%2019
Cliff SwallowHirundinidae252024+212%2021
Mountain ChickadeeParidae242024+350%2021
Western TanagerCardinalidae222024+59%2022
White-crowned SparrowPasserellidae182024-13%2021
Green-tailed TowheePasserellidae182024+280%2021
Common MerganserAnatidae162023+433%2021
Vesper SparrowPasserellidae112024-20%2021
Yellow WarblerParulidae102024+22%2021
Brown-headed CowbirdIcteridae92024+800%2021
Red CrossbillFringillidae82024-32%2022
Lincoln's SparrowPasserellidae82023+700%2021
MacGillivray's WarblerParulidae72024+200%2021
Red-breasted NuthatchSittidae72024+267%2021
Savannah SparrowPasserellidae62024-81%2021
American CrowCorvidae52024+175%2021
Fox SparrowPasserellidae52024+67%2022
Wilson's WarblerParulidae52022+400%2021
Red-winged BlackbirdIcteridae42019n/an/a
Song SparrowPasserellidae42024-78%2021
Tree SwallowHirundinidae42024-68%2021
Mountain BluebirdTurdidae42024-42%2021
Clark's NutcrackerCorvidae42024+100%2022
Broad-tailed HummingbirdTrochilidae32024+0%2021
Common RavenCorvidae32024-73%2021
Common YellowthroatParulidae32024+0%2021
European StarlingSturnidae32021n/an/a
Hermit ThrushTurdidae32024+0%2022
Hammond's FlycatcherTyrannidae32023n/an/a
Hairy WoodpeckerPicidae22024+100%2019
Northern House WrenTroglodytidae22024+0%2022
Brown CreeperCerthiidae22021+100%2019
MallardAnatidae22021n/an/a

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