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

Western Bluebird In Great Basin

All regionsGreat BasinForest birds

Western Bluebird in Great Basin has surged: up 11× on the route-weighted index since 1970.

11×Since 1970
73Routes In Region
56Years

Notable Signals

long arc increasecomputed index

Western Bluebird has surged in Great Basin: up 11× on the route-weighted index since 1970.

Forecast

If the recent trend holds, Western Bluebird in Great Basin is projected to rise about 44% by 2029 — from 0.51 in 2024 to a central estimate of 0.73 (95% range 0.50–0.96). A 5-year backtest shows a typical error of ±44.6%, with 40% of held-out values landing inside the 95% band.

+44%Change by 2029
0.73Projected 2029 index
0.50–0.9695% range
±44.6%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
20250.690.460.91
20260.700.470.92
20270.710.480.93
20280.720.490.94
20290.730.500.96

Routes In Great Basin

Routes recording Western Bluebird in Great Basin.
EllensburgWASHINGTON282024
Deep SpringsCALIFORNIA201974
PomeroyWASHINGTON192024
Carson RiverNEVADA132002
Iron GateCALIFORNIA92019
EightmileOREGON91991
HackamoreCALIFORNIA62010
Fall River MillsCALIFORNIA62011
Jericho JunctionUTAH61997
Ewan 2WASHINGTON62023
TionestaCALIFORNIA42021
GiffordIDAHO42016
JoelIDAHO42024
ZumwaltOREGON42005
NewcastleUTAH42022
SelahWASHINGTON42012
MacdoelCALIFORNIA32019
MadelineCALIFORNIA32021
Davis LakeOREGON32013
Modoc Point 2OREGON32024
Pine CreekUTAH32012
Lake ChelanWASHINGTON32024
Turnbull NwrWASHINGTON32023
BodieCALIFORNIA22010
Davis CreekCALIFORNIA22024

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