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

Anna's Hummingbird In Sierra Nevada

All regionsSierra NevadaGeneralists

Anna's Hummingbird in Sierra Nevada has increased: up 30% on the route-weighted index since 1973.

+30%Since 1973
32Routes In Region
53Years

Notable Signals

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

Forecast

If the recent trend holds, Anna's Hummingbird in Sierra Nevada is projected to stay roughly flat through 2029, near 1.0 (95% range 0.35–1.7). A 5-year backtest shows a typical error of ±69.5%, with 100% of held-out values landing inside the 95% band.

+10%Change by 2029
1.0Projected 2029 index
0.35–1.795% range
±69.5%Backtest error
19712029
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
20250.990.311.7
20261.00.321.7
20271.00.331.7
20281.00.341.7
20291.00.351.7

Routes In Sierra Nevada

Routes recording Anna's Hummingbird in Sierra Nevada.
Bass LakeCALIFORNIA62019
WestvilleCALIFORNIA52022
LakeshoreCALIFORNIA52024
KernvilleCALIFORNIA52008
Silver CityCALIFORNIA42013
Cottage SpgsCALIFORNIA31975
Higgins CornCALIFORNIA32024
CoultervilleCALIFORNIA32019
Kings CanyonCALIFORNIA22024
SattleyCALIFORNIA22013
RivertonCALIFORNIA22019
Chaos CraterCALIFORNIA21996
PaxtonCALIFORNIA22019
Pollock PinesCALIFORNIA22024
WawonaCALIFORNIA22024
Lassen ParkCALIFORNIA11986
Eagle LakeCALIFORNIA12024
JohnsvilleCALIFORNIA12009
WoodfordsCALIFORNIA12024
LumberyardCALIFORNIA11976
Greenhorn MtCALIFORNIA11997
Tuolumne GroveCALIFORNIA12023
Butte MeadowCALIFORNIA12013
GeneseeCALIFORNIA12023
DownievilleCALIFORNIA12023

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