BirdAnalyst
Species · BCR 16 · BBS 2025 Release · 1966–2024

Brown-crested Flycatcher In Southern Rockies / Colorado Plateau

All regionsSouthern Rockies / Colorado PlateauAerial insectivores

Brown-crested Flycatcher in Southern Rockies / Colorado Plateau has collapsed: down 84% on the route-weighted index since 1973.

-84%Since 1973TrendPercent 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 →
4Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
12YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc declinecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Brown-crested Flycatcher has collapsed in Southern Rockies / Colorado Plateau: down 84% on the route-weighted index since 1973.

Routes In Southern Rockies / Colorado Plateau

Routes recording Brown-crested Flycatcher in Southern Rockies / Colorado Plateau.
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 →
YampaiARIZONA11973
Peach SpringARIZONA12021
SeligmanARIZONA12009
ShivwitzUTAH12015

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.