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BBS Route · Utah · BCR 16

Castleton Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 72 species recorded across 8 survey years, no longer active.

72Species 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 →
1969–1985Span
5Observers

Bird Species Found on Utah Castleton

Top 40 of 72 species by most recent count. Each links to its species trend.

Species recorded on the Castleton 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
White-throated SwiftApodidae291985+480%1977
Mourning DoveColumbidae131985+46%1973
Black-billed MagpieCorvidae131985-35%1973
Western KingbirdTyrannidae121985+5%1974
Rock WrenTroglodytidae121985+500%1969
Western MeadowlarkIcteridae121985+285%1974
Cassin's FinchFringillidae121977n/an/a
European StarlingSturnidae81970n/an/a
Common RavenCorvidae71985+100%1975
Yellow-breasted ChatIcteriidae71985n/an/a
Steller's JayCorvidae61976+500%1973
Warbling VireoVireonidae61973n/an/a
Gray CatbirdMimidae61974n/an/a
Ash-throated FlycatcherTyrannidae51985+25%1969
Horned LarkAlaudidae51969n/an/a
Canyon WrenTroglodytidae51985+400%1969
Brown-headed CowbirdIcteridae51985+400%1970
Scott's OrioleIcteridae51970n/an/a
House FinchFringillidae51985+67%1970
Bullock's OrioleIcteridae51985-17%1975
Bank SwallowHirundinidae51975+0%1974
Blue GrosbeakCardinalidae51985+150%1977
ChukarPhasianidae41976+118%1974
Violet-green SwallowHirundinidae41985+188%1973
American RobinTurdidae41985+0%1973
Black-throated SparrowPasserellidae41985-25%1973
Northern Rough-winged SwallowHirundinidae41977-77%1970
Ring-necked PheasantPhasianidae41985-5%1975
Lark SparrowPasserellidae41985-38%1975
Sagebrush SparrowPasserellidae41976n/an/a
KilldeerCharadriidae31985+50%1969
American KestrelFalconidae31985+13%1975
Common NighthawkCaprimulgidae31977+50%1969
Woodhouse's Scrub-JayCorvidae31985-99%1969
American CrowCorvidae31985+50%1969
Lazuli BuntingCardinalidae31985-40%1969
American GoldfinchFringillidae31973n/an/a
Savannah SparrowPasserellidae31974n/an/a
Say's PhoebeTyrannidae21985+0%1969
Spotted TowheePasserellidae21985+0%1970

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