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

Double-crested Cormorant Population Trend in Wyoming

All statesWetland birds

Double-crested Cormorant in Wyoming has edged up: up 14% on the route-weighted index since 1978.

+14%Since 1978
38Routes In State
48Years

Notable Double-crested Cormorant Trends in Wyoming

No notable trend signals for Double-crested Cormorant in Wyoming. See the full index history below.

Double-crested Cormorant Population Forecast in Wyoming

If the recent trend holds, Double-crested Cormorant in Wyoming is projected to rise about 34% by 2029 — from 0.19 in 2024 to a central estimate of 0.26 (95% range 0.00–0.73). A 5-year backtest shows a typical error of ±143.1%, with 100% of held-out values landing inside the 95% band.

+34%Change by 2029
0.26Projected 2029 index
0.00–0.7395% range
±143.1%Backtest error
19762029
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
20250.260.000.74
20260.260.000.74
20270.260.000.74
20280.260.000.73
20290.260.000.73

Double-crested Cormorant Survey Routes in Wyoming

Routes recording Double-crested Cormorant in Wyoming.
Soda Well1719811981
Fontenelle1020241982
Rock River719991992
Sybille Cyn620132013
Harmony620141982
Moose520141992
Elk Horn420002000
Colter Bay319961996
Kaycee320242024
Cody219971993
Otto220152015
Brookhurst220221976
Dayton220242012
Ethete220211991
Sussex220102010
Sweetwater219971997
Bucknum219971996
Yellowstone120221993
Dubois120102010
Midvale120241988
Natrona119901988
Seely 2120042004
Buford119981998
Yoder120121987
Mammoth120122012

Double-crested Cormorant Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsin

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