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

Eastern Phoebe Population Trend in Delaware

All statesAerial insectivores

Eastern Phoebe in Delaware has fallen sharply: down 61% on the route-weighted index since 1968.

-61%Since 1968
17Routes In State
58Years

Notable Eastern Phoebe Trends in Delaware

long arc declinecomputed index

Eastern Phoebe has fallen sharply in Delaware: down 61% on the route-weighted index since 1968.

Eastern Phoebe Population Forecast in Delaware

If the recent trend holds, Eastern Phoebe in Delaware is projected to rise about 84% by 2029 — from 0.40 in 2024 to a central estimate of 0.73 (95% range 0.00–1.7). A 5-year backtest shows a typical error of ±62.8%, with 100% of held-out values landing inside the 95% band.

+84%Change by 2029
0.73Projected 2029 index
0.00–1.795% range
±62.8%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
20250.780.001.8
20260.770.001.8
20270.760.001.7
20280.750.001.7
20290.730.001.7

Eastern Phoebe Survey Routes in Delaware

Routes recording Eastern Phoebe in Delaware.
Lowes Xrds319911967
Wilmington220131970
Frankford220081966
Holleyville220041967
Milton220151966
Millsboro220232017
Pepperbox 2220242017
Mt Pleasant120191968
Harrington120231966
Frederica120141966
Dover119851972
Bethany Bch119661966
Blackbird120211995
Holleyville 2120162006
Pepperbox120162002
Georgetown120221992
Milton 2120172017

Eastern Phoebe Population Trend in Other States

alabamaarkansascoloradoconnecticutfloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsinwyoming

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