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

Double-crested Cormorant Population Trend in Texas

All statesWetland birds

Double-crested Cormorant in Texas has surged: up 695% on the route-weighted index since 1975.

+695%Since 1975
57Routes In State
45Years

Notable Double-crested Cormorant Trends in Texas

long arc increasecomputed index

Double-crested Cormorant has surged in Texas: up 695% on the route-weighted index since 1975.

Double-crested Cormorant Population Forecast in Texas

If the recent trend holds, Double-crested Cormorant in Texas is projected to stay roughly flat through 2029, near 0.13 (95% range 0.00–0.31). A 5-year backtest shows a typical error of ±127.1%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
0.13Projected 2029 index
0.00–0.3195% range
±127.1%Backtest error
19732029
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
20250.130.000.30
20260.130.000.31
20270.130.000.31
20280.130.000.31
20290.130.000.31

Double-crested Cormorant Survey Routes in Texas

Routes recording Double-crested Cormorant in Texas.
Chandler 24020182008
Waka2520102010
Katy2019851985
Bayside1020101994
Petronila720162016
Lag Atascosa619921989
Chinquapin520212021
Yoakum420042004
Encinal 2420232023
Smyrna420052005
Cayuga320242004
Crossroads319991999
Athens320111973
Presidio320212021
Padre Island Pais220152015
Indianola220071988
Campbellton220042000
Stowell219941984
Massey Lake220231974
Kosse220162016
Quitman Canyon 2220212017
Creedmore220002000
Fannin220012001
Kingsville119871982
Schroeder119821982

Double-crested Cormorant Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseeutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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