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

Brown-headed Cowbird In Central Hardwoods

All regionsCentral HardwoodsGeneralists

Brown-headed Cowbird in Central Hardwoods has held roughly steady: up 3% on the route-weighted index since 1968.

+3%Since 1968
166Routes In Region
58Years

Notable Signals

No notable trend signals for Brown-headed Cowbird in Central Hardwoods. See the full index history below.

Forecast

If the recent trend holds, Brown-headed Cowbird in Central Hardwoods is projected to stay roughly flat through 2029, near 16 (95% range 12–19). A 5-year backtest shows a typical error of ±7.1%, with 100% of held-out values landing inside the 95% band.

+4%Change by 2029
16Projected 2029 index
12–1995% range
±7.1%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
2025161219
2026161219
2027161219
2028161219
2029161219

Routes In Central Hardwoods

Routes recording Brown-headed Cowbird in Central Hardwoods.
EugeneMISSOURI562024
NewberryINDIANA552024
SyracuseMISSOURI532024
West PlainsMISSOURI532024
Bays ForkKENTUCKY492019
ColcordOKLAHOMA482022
Cave In RockILLINOIS412024
Osage BeachMISSOURI412024
Rueter 2MISSOURI412024
CelestineINDIANA382024
PulaskiILLINOIS352024
YorkILLINOIS352024
BradyvilleTENNESSEE342021
DelwoodILLINOIS332024
JoyKENTUCKY322023
WhitewaterMISSOURI322024
AvocaARKANSAS312024
MillionKENTUCKY311986
Clementine 2MISSOURI312007
PalaceMISSOURI312024
Peace ValleyMISSOURI302024
CentertonARKANSAS292024
Beaverdam LkILLINOIS292023
SanduskyILLINOIS292023
EvansvilleINDIANA282022

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