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

Brown Creeper Population Trend in Connecticut

All statesForest birds

Brown Creeper in Connecticut has edged up: up 21% on the route-weighted index since 1971.

+21%Since 1971
19Routes In State
44Years

Notable Brown Creeper Trends in Connecticut

No notable trend signals for Brown Creeper in Connecticut. See the full index history below.

Brown Creeper Population Forecast in Connecticut

If the recent trend holds, Brown Creeper in Connecticut is projected to fall about 84% by 2029 — from 0.67 in 2024 to a central estimate of 0.11 (95% range 0.00–0.42). A 5-year backtest shows a typical error of ±54.3%, with 80% of held-out values landing inside the 95% band.

-84%Change by 2029
0.11Projected 2029 index
0.00–0.4295% range
±54.3%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
20250.120.000.43
20260.120.000.43
20270.120.000.42
20280.110.000.42
20290.110.000.42

Brown Creeper Survey Routes in Connecticut

Routes recording Brown Creeper in Connecticut.
Granby320241989
Sherman219921976
Mystic119891976
E Hartland119841984
Buckingham120012001
Uncasville120142014
Woodstock119901971
Westbrook119921986
Willimantic120051974
No Woodbury119851967
Greenwich119841968
Danbury119721968
Warren120111974
Long Hill120171975
Mid Haddam119871975
New Hartford119871977
New Hartford120241995
Woodstock 2120242016
Warren 2120242013

Brown Creeper Population Trend in Other States

alaskaarizonacaliforniacoloradoidahoillinoisindianaiowamainemarylandmassachusettsmichiganminnesotamontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooregonpennsylvaniarhode-islandsouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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