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Species · Connecticut · BBS 2025 Release · 1966–2024

Killdeer Population Trend in Connecticut

All statesShorebirds

Killdeer in Connecticut has declined: down 42% on the route-weighted index since 1968.

-42%Since 1968
19Routes In State
57Years

Notable Killdeer Trends in Connecticut

No notable trend signals for Killdeer in Connecticut. See the full index history below.

Killdeer Population Forecast in Connecticut

If the recent trend holds, Killdeer in Connecticut is projected to fall about 28% by 2029 — from 0.67 in 2024 to a central estimate of 0.48 (95% range 0.00–1.2). A 5-year backtest shows a typical error of ±44.4%, with 100% of held-out values landing inside the 95% band.

-28%Change by 2029
0.48Projected 2029 index
0.00–1.295% range
±44.4%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
20250.510.001.2
20260.500.001.2
20270.490.001.2
20280.480.001.2
20290.480.001.2

Killdeer Survey Routes in Connecticut

Routes recording Killdeer in Connecticut.
Buckingham520141966
Danbury520171968
Uncasville420241977
Woodstock220071971
Westbrook219941978
Mystic120221975
E Hartland119921966
Willimantic120161968
No Woodbury120241967
Sherman120091975
Greenwich119991978
Warren120071972
Long Hill120161974
Mid Haddam120191974
Southington120171974
New Hartford119871973
New Hartford120062006
Warren 2120232014
Granby120241989

Killdeer Population Trend in Other States

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

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