BirdAnalyst
Species · BCR 4 · BBS 2025 Release · 1966–2024

White-crowned Sparrow In BCR 4

All regionsBCR 4Generalists

White-crowned Sparrow in BCR 4 has edged down: down 17% on the route-weighted index since 1976.

-17%Since 1976
70Routes In Region
47Years

Notable Signals

No notable trend signals for White-crowned Sparrow in BCR 4. See the full index history below.

Forecast

If the recent trend holds, White-crowned Sparrow in BCR 4 is projected to fall about 11% by 2029 — from 34 in 2024 to a central estimate of 30 (95% range 16–44). A 5-year backtest shows a typical error of ±17.6%, with 100% of held-out values landing inside the 95% band.

-11%Change by 2029
30Projected 2029 index
16–4495% range
±17.6%Backtest error
19682029
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
2025311645
2026301645
2027301645
2028301644
2029301644

Routes In BCR 4

Routes recording White-crowned Sparrow in BCR 4.
MonahanALASKA1752021
CantwellALASKA1622021
SavageALASKA1372024
DeltaALASKA1122024
ToklatALASKA962024
MaclarenALASKA782024
Mt. FairplayALASKA772024
EagleALASKA722024
Lake LouiseALASKA722014
Caribou Mtn.ALASKA622024
KuskulanaALASKA572024
CircleALASKA462024
Chatanika RALASKA462023
WasillaALASKA441983
Paxson LakeALASKA441997
Kanuti LakeALASKA422024
Mccarthy Rd2ALASKA422024
ChickenALASKA402024
McgrathALASKA402022
KalifonskyALASKA392023
ColdfootALASKA392024
Goose BayALASKA361982
Moose CreekALASKA362022
Nabesna RoadALASKA362024
SourdoughALASKA342024

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