BirdAnalyst
Species · Arizona · BBS 2025 Release · 1966–2024

American Barn Owl Population Trend in Arizona

All statesGeneralists

American Barn Owl in Arizona has fallen sharply: down 57% on the route-weighted index since 1992.

-57%Since 1992TrendPercent 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 →
9Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
16YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable American Barn Owl Trends in ArizonaNotable 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 →

American Barn Owl has fallen sharply in Arizona: down 57% on the route-weighted index since 1992.

American Barn Owl Survey Routes in Arizona

Routes recording American Barn Owl in Arizona.
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 →
Casa Grande220091992
Gila Bend220012001
Skull Valley120061996
Sunizona119871986
Palo Verde120082008
Amado120072007
Clay Spring120102010
Dateland120162016
Pomerene120032003

American Barn Owl Population Trend in Other States

alabamaarkansascaliforniacoloradodelawarefloridageorgiaidahokansaskentuckylouisianamarylandmississippimissourinebraskanevadanew-mexiconorth-carolinaoklahomaoregonsouth-dakotatennesseetexasutahwashingtonwyoming

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