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

Sandwich Tern Population Trend in Alabama

All statesWetland birds

Sandwich Tern in Alabama has fallen sharply: down 57% on the route-weighted index since 1984.

-57%Since 1984
6Routes In State
18Years

Notable Sandwich Tern Trends in Alabama

long arc declinecomputed index

Sandwich Tern has fallen sharply in Alabama: down 57% on the route-weighted index since 1984.

Sandwich Tern Population Forecast in Alabama

If the recent trend holds, Sandwich Tern in Alabama is projected to fall about 43% by 2026 — from 0.11 in 2021 to a central estimate of 0.06 (95% range 0.00–0.33). A 5-year backtest shows a typical error of ±272.7%, with 80% of held-out values landing inside the 95% band.

-43%Change by 2026
0.06Projected 2026 index
0.00–0.3395% range
±272.7%Backtest error
19792026
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
20220.070.000.33
20230.070.000.33
20240.070.000.33
20250.060.000.33
20260.060.000.33

Sandwich Tern Survey Routes in Alabama

Routes recording Sandwich Tern in Alabama.
Dauphin Is 21020141991
Dauphin Is 3820212021
Dauphin Is419891979
Alabama Pt319991996
Chacaloochee Bay320162016
Alabama Pt 2220122012

Sandwich Tern Population Trend in Other States

floridalouisiananorth-carolinatexasvirginia

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