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

Gray Catbird Population Trend in Massachusetts

All statesGeneralists

Gray Catbird in Massachusetts has risen sharply: up 59% on the route-weighted index since 1968.

+59%Since 1968
32Routes In State
58Years

Notable Gray Catbird Trends in Massachusetts

long arc increasecomputed index

Gray Catbird has risen sharply in Massachusetts: up 59% on the route-weighted index since 1968.

Gray Catbird Population Forecast in Massachusetts

If the recent trend holds, Gray Catbird in Massachusetts is projected to stay roughly flat through 2029, near 30 (95% range 23–37). A 5-year backtest shows a typical error of ±22%, with 20% of held-out values landing inside the 95% band.

-10%Change by 2029
30Projected 2029 index
23–3795% range
±22%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
2025302336
2026302337
2027302337
2028302337
2029302337

Gray Catbird Survey Routes in Massachusetts

Routes recording Gray Catbird in Massachusetts.
Brockton7520191967
Wellfleet 26520242016
Marion6220241966
Newburyport5720221967
Gay Head5420241996
S Barre5120241968
Chilmark4619831969
Belchertown4520241967
Holden3520241977
N Oxford3420241968
Pittsfield3420161967
E Dennis3320211967
Warren 23320242010
Prattville3120191966
Mansfield3120241968
Cheshire3019941969
Wellfleet2920071966
Warren2520091968
Monterey2420242019
E Pepperell2219941966
Maynard2120221967
Chesterfield1820241967
Littleton1620241967
N Orange1520241968
Ware River1520221993

Gray Catbird Population Trend in Other States

alabamaarizonaarkansascoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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