BirdAnalyst
BBS Route · Wyoming · BCR 10

Colter Bay Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 98 species recorded across 14 survey years, no longer active.

98Species 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 →
14Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1968–1999Span
5Observers

Bird Species Found on Wyoming Colter Bay

Top 40 of 98 species by most recent count. Each links to its species trend.

Species recorded on the Colter Bay 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
Cliff SwallowHirundinidae951999+45%1970
American RobinTurdidae421999+17%1970
Ruby-crowned KingletRegulidae291999+213%1970
Mountain ChickadeeParidae281999+86%1970
Vesper SparrowPasserellidae231999-47%1970
Warbling VireoVireonidae211999-14%1970
Chipping SparrowPasserellidae191999+11%1970
Pine SiskinFringillidae171999+35%1970
Western TanagerCardinalidae141999-6%1970
Yellow WarblerParulidae131999+24%1970
MacGillivray's WarblerParulidae121998+100%1970
Dusky FlycatcherTyrannidae101999+70%1996
American White PelicanPelecanidae101998+780%1995
Cassin's FinchFringillidae91999-20%1990
Swainson's ThrushTurdidae91999-24%1970
American AvocetRecurvirostridae91997n/an/a
Brown-headed CowbirdIcteridae81999+57%1990
Brewer's SparrowPasserellidae71999-63%1970
Green-tailed TowheePasserellidae71999-43%1970
Hermit ThrushTurdidae71999+233%1990
Common RavenCorvidae61999-55%1970
Olive-sided FlycatcherTyrannidae51999-17%1990
Brewer's BlackbirdIcteridae51999-23%1970
White-crowned SparrowPasserellidae51999-65%1970
Fox SparrowPasserellidae51999-33%1970
Red-breasted NuthatchSittidae51999+46%1970
Wilson's SnipeScolopacidae51999-9%1990
Horned LarkAlaudidae41970+0%1968
Wilson's WarblerParulidae41997-29%1969
Black-capped ChickadeeParidae41999+25%1990
Mountain BluebirdTurdidae41999+11%1989
MallardAnatidae41999-25%1991
Canada JayCorvidae31997+46%1970
Tree SwallowHirundinidae31999-62%1970
Canada GooseAnatidae31999-50%1991
Clark's NutcrackerCorvidae31999+0%1992
Double-crested CormorantPhalacrocoracidae31996n/an/a
Cedar WaxwingBombycillidae31998+0%1997
Hairy WoodpeckerPicidae21998-20%1990
Willow FlycatcherTyrannidae21998-44%1970

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