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

Northern Mockingbird Population Trend in Connecticut

All statesGeneralists

Northern Mockingbird in Connecticut has surged: up 290% on the route-weighted index since 1970.

+290%Since 1970
19Routes In State
56Years

Notable Northern Mockingbird Trends in Connecticut

long arc increasecomputed index

Northern Mockingbird has surged in Connecticut: up 290% on the route-weighted index since 1970.

Northern Mockingbird Population Forecast in Connecticut

If the recent trend holds, Northern Mockingbird in Connecticut is projected to rise about 68% by 2029 — from 1.0 in 2024 to a central estimate of 1.7 (95% range 0.00–9.6). A 5-year backtest shows a typical error of ±161.4%, with 100% of held-out values landing inside the 95% band.

+68%Change by 2029
1.7Projected 2029 index
0.00–9.695% range
±161.4%Backtest error
19682029
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
20252.10.0010
20262.00.009.9
20271.90.009.8
20281.80.009.7
20291.70.009.6

Northern Mockingbird Survey Routes in Connecticut

Routes recording Northern Mockingbird in Connecticut.
New Hartford919871972
E Hartland619921969
Mystic320231973
Uncasville320241973
Woodstock220051973
Sherman220181972
Long Hill220181972
Granby220241988
Buckingham120221970
Westbrook120241969
Willimantic120181971
No Woodbury120241970
Greenwich120171968
Danbury120231971
Warren120101974
Mid Haddam120241973
Southington120241973
New Hartford120061994
Warren 2120162016

Northern Mockingbird Population Trend in Other States

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

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