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Species · Maryland · BBS 2025 Release · 1966–2024

Black-capped Chickadee Population Trend in Maryland

All statesForest birds

Black-capped Chickadee in Maryland has surged: up 12× on the route-weighted index since 1968.

12×Since 1968
15Routes In State
58Years

Notable Black-capped Chickadee Trends in Maryland

long arc increasecomputed index

Black-capped Chickadee has surged in Maryland: up 12× on the route-weighted index since 1968.

Black-capped Chickadee Population Forecast in Maryland

If the recent trend holds, Black-capped Chickadee in Maryland is projected to fall about 17% by 2029 — from 2.5 in 2024 to a central estimate of 2.1 (95% range 1.4–2.8). A 5-year backtest shows a typical error of ±20.9%, with 60% of held-out values landing inside the 95% band.

-17%Change by 2029
2.1Projected 2029 index
1.4–2.895% range
±20.9%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
20252.01.32.7
20262.01.42.7
20272.01.42.7
20282.11.42.7
20292.11.42.8

Black-capped Chickadee Survey Routes in Maryland

Routes recording Black-capped Chickadee in Maryland.
Finzel3220241995
Jennings2820241995
Oldtown2120241970
Accident920171992
Accident 2920242018
Piney Grove720231995
Vindex520241966
Potomac Park520241970
Smithsburg419991977
Mt Nebo319911969
Green Ridge320241995
Floyd220241966
Williamsport220021987
Wolfsville220001981
Steyer220241996

Black-capped Chickadee Population Trend in Other States

alaskacaliforniacoloradoconnecticutidahoillinoisindianaiowakansasmainemassachusettsmichiganminnesotamissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-dakotatennesseeutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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