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Species · Pennsylvania · BBS 2025 Release · 1966–2024

Black-capped Chickadee Population Trend in Pennsylvania

All statesForest birds

Black-capped Chickadee in Pennsylvania has surged: up 158% on the route-weighted index since 1968.

+158%Since 1968
124Routes In State
58Years

Notable Black-capped Chickadee Trends in Pennsylvania

long arc increasecomputed index

Black-capped Chickadee has surged in Pennsylvania: up 158% on the route-weighted index since 1968.

Black-capped Chickadee Population Forecast in Pennsylvania

If the recent trend holds, Black-capped Chickadee in Pennsylvania is projected to rise about 46% by 2029 — from 5.4 in 2024 to a central estimate of 7.9 (95% range 5.1–11). A 5-year backtest shows a typical error of ±60.6%, with 20% of held-out values landing inside the 95% band.

+46%Change by 2029
7.9Projected 2029 index
5.1–1195% range
±60.6%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
20257.64.810
20267.74.911
20277.85.011
20287.95.011
20297.95.111

Black-capped Chickadee Survey Routes in Pennsylvania

Routes recording Black-capped Chickadee in Pennsylvania.
Roulette 24320242022
Roulette3320211971
Rasselas2820221970
Pocono Summit 22020102004
Odin1920241973
Little Marsh1820241967
Eldred1720221973
Sigel1620241981
Russell City1620241968
Arnot1620241969
Greentown1620241969
Marsh Hill1520241983
Poyntelle1520241969
N Pine Grove1420241969
Betula1420221975
English Ctr1419891966
Ryde1420051968
Ridgway1320181966
Canadensis1320241969
Rush1220241970
Margaret1220241973
Logue1120231973
Warrens Mill1120241971
Sugar Grove1120241980
Mill Run1120241978

Black-capped Chickadee Population Trend in Other States

alaskacaliforniacoloradoconnecticutidahoillinoisindianaiowakansasmainemarylandmassachusettsmichiganminnesotamissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonrhode-islandsouth-dakotatennesseeutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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