BirdAnalyst
Species · BCR 9 · BBS 2025 Release · 1966–2024

Osprey In Great Basin

All regionsGreat BasinGeneralists

Osprey in Great Basin has surged: up 789% on the route-weighted index since 1972.

+789%Since 1972
90Routes In Region
51Years

Notable Signals

long arc increasecomputed index

Osprey has surged in Great Basin: up 789% on the route-weighted index since 1972.

Forecast

If the recent trend holds, Osprey in Great Basin is projected to rise about 140% by 2029 — from 0.15 in 2024 to a central estimate of 0.36 (95% range 0.22–0.50). A 5-year backtest shows a typical error of ±82.4%, with 40% of held-out values landing inside the 95% band.

+140%Change by 2029
0.36Projected 2029 index
0.22–0.5095% range
±82.4%Backtest error
19702029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20250.340.200.47
20260.340.210.48
20270.350.210.48
20280.350.220.49
20290.360.220.50

Routes In Great Basin

Routes recording Osprey in Great Basin.
Iron GateCALIFORNIA262019
RirieIDAHO62023
BatesIDAHO52023
Modoc Point 2OREGON52024
CallaoUTAH41999
NighthawkWASHINGTON42024
HackamoreCALIFORNIA32003
EwanWASHINGTON32019
YakimaWASHINGTON32024
NubieberCALIFORNIA22006
BartleCALIFORNIA21999
Crowder FlatCALIFORNIA22002
Fall River MillsCALIFORNIA22011
GiffordIDAHO21997
SpringfieldIDAHO22018
Daniels ResIDAHO21998
PrestonIDAHO22016
Fandango CanOREGON22010
Modoc PointOREGON22018
JosephOREGON22024
UmatillaOREGON22023
Wizard FallsOREGON22017
Bly 2OREGON22011
AsotinWASHINGTON22024
PrescottWASHINGTON22019

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