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

Rufous-crowned Sparrow In Sierra Nevada

All regionsSierra NevadaGeneralists

Rufous-crowned Sparrow in Sierra Nevada has increased: up 32% on the route-weighted index since 1997.

+32%Since 1997
6Routes In Region
25Years

Notable Signals

No notable trend signals for Rufous-crowned Sparrow in Sierra Nevada. See the full index history below.

Forecast

If the recent trend holds, Rufous-crowned Sparrow in Sierra Nevada is projected to rise about 313% by 2029 — from 0.05 in 2024 to a central estimate of 0.22 (95% range 0.01–0.43). A 5-year backtest shows a typical error of ±103.4%, with 100% of held-out values landing inside the 95% band.

+313%Change by 2029
0.22Projected 2029 index
0.01–0.4395% range
±103.4%Backtest error
19722029
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
20250.210.000.42
20260.210.000.43
20270.210.000.43
20280.220.000.43
20290.220.010.43

Routes In Sierra Nevada

Routes recording Rufous-crowned Sparrow in Sierra Nevada.
Silver CityCALIFORNIA62013
Forest HillCALIFORNIA42022
KernvilleCALIFORNIA22008
Bass LakeCALIFORNIA12019
Kings CanyonCALIFORNIA12024
CoultervilleCALIFORNIA12007

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