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BBS Route · Wyoming · BCR 10

Bear Creek Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 55 species recorded across 47 survey years, still active.

55Species 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 →
47Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1968–2024Span
3Observers

Bird Species Found on Wyoming Bear Creek

Top 40 of 55 species by most recent count. Each links to its species trend.

Species recorded on the Bear Creek 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 LarkAlaudidae1892024-24%1970
Brewer's SparrowPasserellidae1152024+448%1970
Mourning DoveColumbidae892024+239%1972
Sage ThrasherMimidae752024+175%1970
Greater Sage-GrousePhasianidae282024+20%1970
Sagebrush SparrowPasserellidae192024+154%1970
Barn SwallowHirundinidae102015+450%2000
American CrowCorvidae62016+100%2007
Vesper SparrowPasserellidae52024-52%1972
Green-tailed TowheePasserellidae52024+467%1996
Savannah SparrowPasserellidae52019+150%1980
Common RavenCorvidae42024+50%1991
Mountain PloverCharadriidae32024+50%1970
Loggerhead ShrikeLaniidae32018+25%1972
Rock WrenTroglodytidae32023+40%1973
Western MeadowlarkIcteridae32024+50%1975
Lark SparrowPasserellidae32015+50%1999
Lark BuntingPasserellidae22024-51%1972
Pine SiskinFringillidae21970n/an/a
MallardAnatidae21982+100%1972
Golden EagleAccipitridae22022+33%1977
Brown-headed CowbirdIcteridae22003-25%1987
Warbling VireoVireonidae22024+33%2007
Ferruginous HawkAccipitridae12022+0%1981
Say's PhoebeTyrannidae12022-40%1977
Brewer's BlackbirdIcteridae12024-70%1970
KilldeerCharadriidae12024-63%1974
Northern HarrierAccipitridae12022+60%1973
Swainson's HawkAccipitridae12003+0%1969
European StarlingSturnidae11975-67%1969
Red-winged BlackbirdIcteridae12019-67%1972
Short-eared OwlStrigidae11972n/an/a
Black-billed MagpieCorvidae12018-25%1982
American GoldfinchFringillidae12007-50%1972
Mountain BluebirdTurdidae12018+50%1975
Common GrackleIcteridae12008-50%1973
Prairie FalconFalconidae12015+0%1990
American AvocetRecurvirostridae12004-50%1986
Spotted TowheePasserellidae11998+0%1986
American RobinTurdidae12024-25%1996

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