BirdAnalyst
Species · BCR 27 · BBS 2025 Release · 1966–2024

Double-crested Cormorant In Southeastern Coastal Plain

All regionsSoutheastern Coastal PlainWetland birds

Double-crested Cormorant in Southeastern Coastal Plain has surged: up 16× on the route-weighted index since 1969.

16×Since 1969
113Routes In Region
55Years

Notable Signals

long arc increasecomputed index

Double-crested Cormorant has surged in Southeastern Coastal Plain: up 16× on the route-weighted index since 1969.

Forecast

If the recent trend holds, Double-crested Cormorant in Southeastern Coastal Plain is projected to rise about 171% by 2029 — from 0.10 in 2024 to a central estimate of 0.28 (95% range 0.01–0.55). A 5-year backtest shows a typical error of ±158.9%, with 80% of held-out values landing inside the 95% band.

+171%Change by 2029
0.28Projected 2029 index
0.01–0.5595% range
±158.9%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
20250.270.000.54
20260.270.000.54
20270.270.000.54
20280.280.010.55
20290.280.010.55

Routes In Southeastern Coastal Plain

Routes recording Double-crested Cormorant in Southeastern Coastal Plain.
Maple HillNORTH-CAROLINA272023
CastleberryALABAMA232008
WashingtonNORTH-CAROLINA162021
Adams RunSOUTH-CAROLINA151999
HertfordNORTH-CAROLINA122013
SupplyNORTH-CAROLINA112021
Ft Waltn BchFLORIDA82008
MashoesNORTH-CAROLINA81982
Big SandyTENNESSEE82024
KinstonNORTH-CAROLINA72016
WedgeworthALABAMA62002
NashvilleGEORGIA62002
Rock ChapelALABAMA52002
Hixtown SwmpFLORIDA52015
DortchesNORTH-CAROLINA52015
JarvisburgNORTH-CAROLINA51999
BranchvilleVIRGINIA51999
Dauphin Is 2ALABAMA42018
MerrimonNORTH-CAROLINA42021
St FlorianALABAMA31999
GreensboroALABAMA32012
MiccosukeeFLORIDA32000
PinettaFLORIDA32024
Cross CityFLORIDA32021
OkefenokeeGEORGIA31991

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