BirdAnalyst
BBS Route · Wyoming · BCR 17

Dwyer Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 61 species recorded across 10 survey years, still active.

61Species 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 →
10Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1992–2019Span
4Observers

Bird Species Found on Wyoming Dwyer

Top 40 of 61 species by most recent count. Each links to its species trend.

Species recorded on the Dwyer 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
Brewer's BlackbirdIcteridae2262019+468%1995
Northern Rough-winged SwallowHirundinidae1622017+156%1996
Cliff SwallowHirundinidae1552019-54%1995
Western MeadowlarkIcteridae1532019-56%1995
Lark BuntingPasserellidae1032019-57%1995
Red-winged BlackbirdIcteridae512019-73%1995
Barn SwallowHirundinidae352019+120%1995
European StarlingSturnidae262019+17%1995
Mourning DoveColumbidae202019-58%1995
KilldeerCharadriidae202019+146%1996
Common GrackleIcteridae182019-26%1995
American RobinTurdidae182019-56%1995
American White PelicanPelecanidae152019+73%1995
American CootRallidae131992n/an/a
Yellow-headed BlackbirdIcteridae102016+233%1992
House SparrowPasseridae102016-85%1995
Rock PigeonColumbidae102019-71%1996
Western GrebePodicipedidae92016+50%1992
Great Horned OwlStrigidae91992n/an/a
California GullLaridae62019+31%2014
Lark SparrowPasserellidae62019-86%1995
House FinchFringillidae61995+20%1994
Say's PhoebeTyrannidae62014+100%1996
Sandhill CraneGruidae62017+200%2006
Vesper SparrowPasserellidae52019+67%1995
Horned LarkAlaudidae42008-82%1995
Blue GrosbeakCardinalidae41995+100%1994
Rock WrenTroglodytidae41996n/an/a
Spotted TowheePasserellidae32008+600%1994
MallardAnatidae32019+25%2006
Common MerganserAnatidae21992n/an/a
Black-crowned Night HeronArdeidae21992n/an/a
Loggerhead ShrikeLaniidae21995-33%1992
Ring-billed GullLaridae21994n/an/a
American GoldfinchFringillidae21994n/an/a
Great Blue HeronArdeidae22016+100%1995
American KestrelFalconidae12017-71%1995
Common NighthawkCaprimulgidae12019-54%1995
Eastern KingbirdTyrannidae12019-62%1995
Western KingbirdTyrannidae12017-76%1995

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