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

Brown Creeper Population Trend in Maine

All statesForest birds

Brown Creeper in Maine has surged: up 120% on the route-weighted index since 1968.

+120%Since 1968
63Routes In State
55Years

Notable Brown Creeper Trends in Maine

long arc increasecomputed index

Brown Creeper has surged in Maine: up 120% on the route-weighted index since 1968.

Brown Creeper Population Forecast in Maine

If the recent trend holds, Brown Creeper in Maine is projected to fall about 30% by 2029 — from 0.79 in 2024 to a central estimate of 0.55 (95% range 0.15–0.94). A 5-year backtest shows a typical error of ±38.6%, with 40% of held-out values landing inside the 95% band.

-30%Change by 2029
0.55Projected 2029 index
0.15–0.9495% range
±38.6%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
20250.520.120.92
20260.530.130.92
20270.540.140.93
20280.540.140.94
20290.550.150.94

Brown Creeper Survey Routes in Maine

Routes recording Brown Creeper in Maine.
Pillsbury Pd519681968
Brownfield 2520242015
Big Twenty320071993
Wilson Mills220181983
Nesowadnehun220211990
East Troy220181983
Topsfield219911990
Harmony220221968
Clayton Lake 2220102010
Eastbrook220231993
Heron Lake220031994
Aurora220211996
Carrying Pl220241980
Wytopitlock219971990
Medway220181991
Grnd Lk Strm219921990
Clayton Lake220011977
Stacyville220232023
Andover220212010
Yankeetuladi220071994
Rome220241996
Westbrook119931979
Biddeford119941987
Kittery Pt120221966
Newcastle120231990

Brown Creeper Population Trend in Other States

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

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