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

Northern Pygmy-Owl Population Trend in Arizona

All statesGeneralists

Northern Pygmy-Owl in Arizona has fallen sharply: down 69% on the route-weighted index since 1992.

-69%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 →
17YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Northern Pygmy-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 →

Northern Pygmy-Owl has fallen sharply in Arizona: down 69% on the route-weighted index since 1992.

Northern Pygmy-Owl Survey Routes in Arizona

Routes recording Northern Pygmy-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 →
Blue319871987
Mt. Graham220192018
House Rock119931993
Portal120191985
Rucker120092009
Alpine120212003
Prescott120222022
Sahuarita120082008
Sprucedale120081992

Northern Pygmy-Owl Population Trend in Other States

alaskacaliforniacoloradoidahomontananew-mexicooregonutahwashingtonwyoming

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