BirdAnalyst
BBS Route · Wyoming · BCR 10

Farson Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 39 species recorded across 9 survey years, still active.

39Species 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 →
9Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1995–2025Span
6Observers

Bird Species Found on Wyoming Farson

Top 39 of 39 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 LarkAlaudidae1122025-44%2005
Lark BuntingPasserellidae172018-55%2001
Common RavenCorvidae132025+14%2005
MallardAnatidae112018+7%2006
Mourning DoveColumbidae102025+0%2005
Brown-headed CowbirdIcteridae102025+186%2008
Sage ThrasherMimidae82025-31%2005
House SparrowPasseridae82025+33%2007
Red-tailed HawkAccipitridae72025+75%2018
Brewer's SparrowPasserellidae62025+138%2006
American RobinTurdidae62025+39%2007
European StarlingSturnidae62025+200%2005
Lark SparrowPasserellidae52001+400%1995
Song SparrowPasserellidae52008-38%2001
Greater Sage-GrousePhasianidae42025-29%2001
Western MeadowlarkIcteridae42025-63%2005
Brewer's BlackbirdIcteridae42024-41%2007
Ferruginous HawkAccipitridae42005n/an/a
Northern HarrierAccipitridae32025+100%2006
Wilson's SnipeScolopacidae32007n/an/a
Savannah SparrowPasserellidae32018n/an/a
Grasshopper SparrowPasserellidae22001+0%1995
Vesper SparrowPasserellidae22025-68%2006
Barn SwallowHirundinidae22024+100%2001
Chipping SparrowPasserellidae22007-33%2005
Loggerhead ShrikeLaniidae22007n/an/a
Western KingbirdTyrannidae22024+100%2018
Eurasian Collared-DoveColumbidae22024-33%2018
Swainson's HawkAccipitridae12024+0%2006
Golden EagleAccipitridae12025+0%1995
Sagebrush SparrowPasserellidae12025-10%2005
Sandhill CraneGruidae12025-25%2006
KilldeerCharadriidae12025+0%2007
Common NighthawkCaprimulgidae12025+150%2006
Red-winged BlackbirdIcteridae12008+0%2001
Prairie FalconFalconidae12024+0%2005
American CrowCorvidae12025-79%2018
American KestrelFalconidae12018n/an/a
Violet-green SwallowHirundinidae12025n/an/a

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. A route is a sample, not a census.