BirdAnalyst
Species · BCR 19 · BBS 2025 Release · 1966–2024

Brown-headed Cowbird In Central Mixed Grass Prairie

All regionsCentral Mixed Grass PrairieGeneralists

Brown-headed Cowbird in Central Mixed Grass Prairie has edged down: down 13% on the route-weighted index since 1969.

-13%Since 1969
130Routes In Region
57Years

Notable Signals

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

Forecast

If the recent trend holds, Brown-headed Cowbird in Central Mixed Grass Prairie is projected to stay roughly flat through 2029, near 32 (95% range 24–41). A 5-year backtest shows a typical error of ±9.2%, with 100% of held-out values landing inside the 95% band.

+7%Change by 2029
32Projected 2029 index
24–4195% range
±9.2%Backtest error
19672029
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
2025322441
2026322441
2027322441
2028322441
2029322441

Routes In Central Mixed Grass Prairie

Routes recording Brown-headed Cowbird in Central Mixed Grass Prairie.
KanopolisKANSAS1802024
CovertKANSAS1662024
SumnerNEBRASKA1662024
Berwyn 2NEBRASKA1082021
KenesawNEBRASKA1052024
Beloit 2KANSAS1042018
SurpriseNEBRASKA832024
LoganKANSAS802022
ChambersNEBRASKA782023
BerwynNEBRASKA722010
TableNEBRASKA712024
BartleyNEBRASKA632024
HamptonNEBRASKA632024
HanoverKANSAS612023
HunterOKLAHOMA602024
Swan LakeNEBRASKA572023
Wheeler CoNEBRASKA572024
SusankKANSAS552022
HendleyNEBRASKA552024
PhillipsburgKANSAS542022
HaysKANSAS512014
LibertyNEBRASKA512003
GrayKANSAS502019
SolomonKANSAS502019
DamarKANSAS502016

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