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

Seaside Sparrow In Southeastern Coastal Plain

All regionsSoutheastern Coastal PlainGeneralists

Seaside Sparrow in Southeastern Coastal Plain has collapsed: down 96% on the route-weighted index since 1968.

-96%Since 1968
9Routes In Region
57Years

Notable Signals

long arc declinecomputed index

Seaside Sparrow has collapsed in Southeastern Coastal Plain: down 96% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Seaside Sparrow in Southeastern Coastal Plain is projected to stay roughly flat through 2029, near 0.04 (95% range 0.00–0.18). A 5-year backtest shows a typical error of ±467.5%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
0.04Projected 2029 index
0.00–0.1895% range
±467.5%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
20250.050.000.18
20260.050.000.18
20270.050.000.18
20280.040.000.18
20290.040.000.18

Routes In Southeastern Coastal Plain

Routes recording Seaside Sparrow in Southeastern Coastal Plain.
Dauphin Is 2ALABAMA92018
St Vincent IFLORIDA92019
Dauphin IsALABAMA21990
Port St JoeFLORIDA21997
SteinhatcheeFLORIDA12023
Alligator PtFLORIDA12024
MerrimonNORTH-CAROLINA12023
SupplyNORTH-CAROLINA12008
Johns IsleSOUTH-CAROLINA11979

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