BirdAnalyst
Species · BCR 28 · BBS 2025 Release · 1966–2024

Brown-headed Cowbird In Appalachian Mountains

All regionsAppalachian MountainsGeneralists

Brown-headed Cowbird in Appalachian Mountains has declined: down 46% on the route-weighted index since 1968.

-46%Since 1968
400Routes In Region
58Years

Notable Signals

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

Forecast

If the recent trend holds, Brown-headed Cowbird in Appalachian Mountains is projected to fall about 26% by 2029 — from 5.3 in 2024 to a central estimate of 3.9 (95% range 1.9–5.8). A 5-year backtest shows a typical error of ±29.9%, with 60% of held-out values landing inside the 95% band.

-26%Change by 2029
3.9Projected 2029 index
1.9–5.895% range
±29.9%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
20254.32.36.2
20264.22.26.1
20274.12.16.0
20284.02.05.9
20293.91.95.8

Routes In Appalachian Mountains

Routes recording Brown-headed Cowbird in Appalachian Mountains.
StaffordsvilKENTUCKY481997
PaintsvilleKENTUCKY471995
DurhamNEW-YORK431976
StevensonALABAMA382024
StollingsWEST-VIRGINIA382021
StonecreekOHIO372024
LovellTENNESSEE372019
Big FlatPENNSYLVANIA341981
Corryton RdTENNESSEE332019
HendersonWEST-VIRGINIA302023
NewcomerstwnOHIO291995
DresdenOHIO282024
SpencerWEST-VIRGINIA282023
StoneybreakPENNSYLVANIA252024
QuakertownPENNSYLVANIA221989
Front RoyalVIRGINIA222024
Davis CrossroadsGEORGIA192021
WilliamsportMARYLAND192024
BeaverPENNSYLVANIA192024
HebronVIRGINIA192022
CedarvilleWEST-VIRGINIA192023
SmithsburgMARYLAND182014
Mill RunPENNSYLVANIA182024
HopeNEW-JERSEY171994
BrunnervillePENNSYLVANIA172009

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