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

Sandwich Tern In Southeastern Coastal Plain

All regionsSoutheastern Coastal PlainWetland birds

Sandwich Tern in Southeastern Coastal Plain has declined: down 36% on the route-weighted index since 1979.

-36%Since 1979
12Routes In Region
27Years

Notable Signals

No notable trend signals for Sandwich Tern in Southeastern Coastal Plain. See the full index history below.

Forecast

If the recent trend holds, Sandwich Tern in Southeastern Coastal Plain is projected to stay roughly flat through 2029, near 0.02 (95% range 0.00–0.11). A 5-year backtest shows a typical error of ±248.5%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
0.02Projected 2029 index
0.00–0.1195% range
±248.5%Backtest error
19702029
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
20250.030.000.11
20260.030.000.11
20270.030.000.11
20280.020.000.11
20290.020.000.11

Routes In Southeastern Coastal Plain

Routes recording Sandwich Tern in Southeastern Coastal Plain.
Dauphin Is 2ALABAMA102014
Dauphin Is 3ALABAMA82021
Dauphin IsALABAMA41989
Alabama PtALABAMA31999
Chacaloochee BayALABAMA32016
Myrtle GroveNORTH-CAROLINA32024
Alabama Pt 2ALABAMA22012
St Vincent IFLORIDA22024
Ft Waltn BchFLORIDA11999
Port St JoeFLORIDA11985
Santa RosaFLORIDA11988
MerrimonNORTH-CAROLINA12021

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