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

Cerulean Warbler Population Trend in Indiana

All statesForest birds

Cerulean Warbler in Indiana has fallen sharply: down 55% on the route-weighted index since 1968.

-55%Since 1968
28Routes In State
57Years

Notable Cerulean Warbler Trends in Indiana

long arc declinecomputed index

Cerulean Warbler has fallen sharply in Indiana: down 55% on the route-weighted index since 1968.

Cerulean Warbler Population Forecast in Indiana

If the recent trend holds, Cerulean Warbler in Indiana is projected to rise about 37% by 2029 — from 0.13 in 2024 to a central estimate of 0.17 (95% range 0.00–0.38). A 5-year backtest shows a typical error of ±41.7%, with 100% of held-out values landing inside the 95% band.

+37%Change by 2029
0.17Projected 2029 index
0.00–0.3895% range
±41.7%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
20250.180.000.38
20260.180.000.38
20270.180.000.38
20280.170.000.38
20290.170.000.38

Cerulean Warbler Survey Routes in Indiana

Routes recording Cerulean Warbler in Indiana.
Hoosier320241990
Indiana Dune220221994
Middletown219901990
Cumback219961966
Vevay220011972
Knox119901990
Kewanna119831983
Packertown120041968
Ellis120091970
Monticello119851985
Galveston120101982
Wabash120092007
Pimento120212021
Belmont120241983
Spencer120131978
Azalia120021982
Shelbyville119861983
Brookville119741974
Indian Spgs120241986
Celestine120001980
Clear Spring120191981
New Phila120011984
Corydon120241966
Scottsburg119831982
Wallace120231999

Cerulean Warbler Population Trend in Other States

alabamaarkansasconnecticutgeorgiaillinoiskentuckylouisianamarylandmassachusettsmichiganminnesotamississippimissourinew-hampshirenew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniatennesseevermontvirginiawest-virginiawisconsin

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