BirdAnalyst
Species · BCR 34 · BBS 2026 Release · 1966–2025

Osprey In Sierra Madre Occidental

All regionsSierra Madre OccidentalBirds of prey

Osprey in Sierra Madre Occidental has risen sharply: up 59% on the route-weighted index since 1993.

+59%Since 1993TrendPercent 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 →
6Routes 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 →
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 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 increasecomputed 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 →

Osprey has risen sharply in Sierra Madre Occidental: up 59% on the route-weighted index since 1993.

Routes In Sierra Madre Occidental

Routes recording Osprey in Sierra Madre Occidental.
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 →
WilliamsARIZONA42025
AlpineARIZONA42025
Peña BlancaARIZONA11983
Tonto Vill.ARIZONA12014
CutterARIZONA12014
Happy JackARIZONA12014

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.