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Species · Arkansas · BBS 2025 Release · 1966–2024

Swainson's Warbler Population Trend in Arkansas

All statesForest birds

Swainson's Warbler in Arkansas has surged: up 240% on the route-weighted index since 1970.

+240%Since 1970
15Routes In State
36Years

Notable Swainson's Warbler Trends in Arkansas

long arc increasecomputed index

Swainson's Warbler has surged in Arkansas: up 240% on the route-weighted index since 1970.

Swainson's Warbler Population Forecast in Arkansas

If the recent trend holds, Swainson's Warbler in Arkansas is projected to rise about 65% by 2029 — from 0.18 in 2024 to a central estimate of 0.30 (95% range 0.09–0.50). A 5-year backtest shows a typical error of ±48.1%, with 80% of held-out values landing inside the 95% band.

+65%Change by 2029
0.30Projected 2029 index
0.09–0.5095% range
±48.1%Backtest error
19682029
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
20250.280.070.48
20260.280.070.49
20270.290.080.49
20280.290.090.50
20290.300.090.50

Swainson's Warbler Survey Routes in Arkansas

Routes recording Swainson's Warbler in Arkansas.
Old Milo120241969
Ramsey119941968
Locust Bayou120231989
Hope120242019
Havana120152015
Princeton120012001
Four Lakes120002000
South Bend119771977
Gillett120242024
Poyen120071970
Hollywood120141982
Blakely119991990
Crowley'S Ridge120242011
Poyen 2120242008
Dry Fork120062006

Swainson's Warbler Population Trend in Other States

alabamafloridageorgiakentuckylouisianamarylandmississippinorth-carolinaoklahomasouth-carolinatennesseetexasvirginiawest-virginia

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