BirdAnalyst
BBS Route · Wyoming · BCR 10

Farson Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 38 species recorded across 8 survey years, still active.

38Species 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 →
8Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1995–2024Span
5Observers

Bird Species Found on Wyoming Farson

Top 38 of 38 species by most recent count. Each links to its species trend.

Species recorded on the Farson 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 LarkAlaudidae942024-40%2005
Brewer's SparrowPasserellidae372024+171%2006
Sagebrush SparrowPasserellidae212024+18%2005
Lark BuntingPasserellidae172018-55%2001
Sage ThrasherMimidae162024+26%2005
MallardAnatidae112018+7%2006
Brown-headed CowbirdIcteridae102024+157%2008
Vesper SparrowPasserellidae72024+64%2006
KilldeerCharadriidae62018+75%2005
House SparrowPasseridae62024+20%2007
Lark SparrowPasserellidae52001+400%1995
Song SparrowPasserellidae52008-38%2001
American RobinTurdidae52024+50%2005
Sandhill CraneGruidae42024+25%2005
Brewer's BlackbirdIcteridae42024-41%2007
Ferruginous HawkAccipitridae42005n/an/a
Northern HarrierAccipitridae32024+100%2006
Common NighthawkCaprimulgidae32018+200%2005
American CrowCorvidae32024-82%2006
Wilson's SnipeScolopacidae32007n/an/a
Savannah SparrowPasserellidae32018n/an/a
Mourning DoveColumbidae22024+16%2005
Common RavenCorvidae22024+36%2005
Grasshopper SparrowPasserellidae22001+0%1995
Barn SwallowHirundinidae22024+100%2001
European StarlingSturnidae22018+0%2005
Chipping SparrowPasserellidae22007-33%2005
Loggerhead ShrikeLaniidae22007n/an/a
Red-tailed HawkAccipitridae22024-50%2018
Western KingbirdTyrannidae22024+100%2018
Eurasian Collared-DoveColumbidae22024-33%2018
Greater Sage-GrousePhasianidae12018+43%2001
Swainson's HawkAccipitridae12024+0%2006
Golden EagleAccipitridae11995n/an/a
Western MeadowlarkIcteridae12024-63%2005
Red-winged BlackbirdIcteridae12008+0%2001
Prairie FalconFalconidae12024+0%2005
American KestrelFalconidae12018n/an/a

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