BirdAnalyst
Species · BCR 15 · BBS 2025 Release · 1966–2024

Cooper's Hawk In Sierra Nevada

All regionsSierra NevadaGeneralists

Cooper's Hawk in Sierra Nevada has declined: down 48% on the route-weighted index since 1977.

-48%Since 1977
20Routes In Region
32Years

Notable Signals

No notable trend signals for Cooper's Hawk in Sierra Nevada. See the full index history below.

Forecast

If the recent trend holds, Cooper's Hawk in Sierra Nevada is projected to fall about 41% by 2028 — from 0.06 in 2023 to a central estimate of 0.04 (95% range 0.00–0.11). A 5-year backtest shows a typical error of ±24%, with 100% of held-out values landing inside the 95% band.

-41%Change by 2028
0.04Projected 2028 index
0.00–0.1195% range
±24%Backtest error
19722028
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
20240.040.000.12
20250.040.000.11
20260.040.000.11
20270.040.000.11
20280.040.000.11

Routes In Sierra Nevada

Routes recording Cooper's Hawk in Sierra Nevada.
Eagle LakeCALIFORNIA12003
WestvilleCALIFORNIA12022
Bass LakeCALIFORNIA12019
JohnsvilleCALIFORNIA11978
LumberyardCALIFORNIA12005
Greenhorn MtCALIFORNIA12008
Silver CityCALIFORNIA12012
Kings CanyonCALIFORNIA11988
Tuolumne GroveCALIFORNIA11998
SattleyCALIFORNIA12017
GeneseeCALIFORNIA11993
Higgins CornCALIFORNIA12006
DownievilleCALIFORNIA12014
RivertonCALIFORNIA12010
Hat CreekCALIFORNIA12007
Meadow ValleyCALIFORNIA12023
Little TruckeeCALIFORNIA12008
Forest HillCALIFORNIA12004
WawonaCALIFORNIA12015
StrawberryCALIFORNIA11999

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