BirdAnalyst
Species · Arizona · BBS 2025 Release · 1966–2024

Blue Grosbeak Population Trend in Arizona

All statesGeneralists

Blue Grosbeak in Arizona has risen sharply: up 65% on the route-weighted index since 1970.

+65%Since 1970
44Routes In State
56Years

Notable Blue Grosbeak Trends in Arizona

long arc increasecomputed index

Blue Grosbeak has risen sharply in Arizona: up 65% on the route-weighted index since 1970.

Blue Grosbeak Population Forecast in Arizona

If the recent trend holds, Blue Grosbeak in Arizona is projected to fall about 39% by 2029 — from 3.2 in 2024 to a central estimate of 1.9 (95% range 0.00–4.4). A 5-year backtest shows a typical error of ±25.3%, with 100% of held-out values landing inside the 95% band.

-39%Change by 2029
1.9Projected 2029 index
0.00–4.495% range
±25.3%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
20252.00.004.5
20262.00.004.5
20272.00.004.5
20282.00.004.4
20291.90.004.4

Blue Grosbeak Survey Routes in Arizona

Routes recording Blue Grosbeak in Arizona.
Pomerene5720241968
Tsaile3719951995
Amado1720231993
Patagonia1420241968
Sunizona 21220242001
Portal1020241977
Redington1020231993
Mcneal620241992
Hunt519901968
Sunizona519971968
Rucker420091993
Prescott420221974
Dateland420161999
Peña Blanca420241975
Cutter 2420182015
Peach Spring420221998
Skull Valley320241996
Sahuarita320241993
Seligman320211992
Carr Mtn320221985
Dragoon220091993
Cibola Lake220021993
Black Mesa119951990
Oraibi120181994
Mormon Lake119741974

Blue Grosbeak Population Trend in Other States

alabamaarkansascaliforniacoloradodelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamarylandminnesotamississippimissourimontananebraskanevadanew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniasouth-carolinasouth-dakotatennesseetexasutahvirginiawest-virginiawyoming

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