BirdAnalyst
Species · BCR 24 · BBS 2025 Release · 1966–2024

Blue Grosbeak In Central Hardwoods

All regionsCentral HardwoodsGeneralists

Blue Grosbeak in Central Hardwoods has surged: up 268% on the route-weighted index since 1968.

+268%Since 1968
161Routes In Region
58Years

Notable Signals

long arc increasecomputed index

Blue Grosbeak has surged in Central Hardwoods: up 268% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Blue Grosbeak in Central Hardwoods is projected to stay roughly flat through 2029, near 7.1 (95% range 6.0–8.1). A 5-year backtest shows a typical error of ±8.8%, with 100% of held-out values landing inside the 95% band.

+5%Change by 2029
7.1Projected 2029 index
6.0–8.195% range
±8.8%Backtest error
19662029
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
20256.85.77.8
20266.85.87.9
20276.95.98.0
20287.06.08.0
20297.16.08.1

Routes In Central Hardwoods

Routes recording Blue Grosbeak in Central Hardwoods.
GlenTENNESSEE252024
Bays ForkKENTUCKY242019
West PlainsMISSOURI202024
KarnakILLINOIS192024
Wheeler DamALABAMA182023
Ravenden SpringsARKANSAS182015
WhitewaterMISSOURI182024
HegiraKENTUCKY172024
FarwellARKANSAS162018
BremenILLINOIS162024
CumbackINDIANA162021
NewberryINDIANA162024
ComptonARKANSAS152022
Beaverdam LkILLINOIS152023
Rueter 2MISSOURI152024
BrownvilleILLINOIS142024
RoyaltonILLINOIS142024
Iron BridgeKENTUCKY141998
Sulphur LickKENTUCKY142024
DemunbrunsKENTUCKY142021
DelwoodILLINOIS132024
JoyKENTUCKY132023
Hodgenville 2KENTUCKY132023
ApexKENTUCKY132024
PleasurevillKENTUCKY132024

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