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

Osprey Population Trend in Vermont

All statesGeneralists

Osprey in Vermont has surged: up 292% on the route-weighted index since 1999.

+292%Since 1999
6Routes In State
22Years

Notable Osprey Trends in Vermont

long arc increasecomputed index

Osprey has surged in Vermont: up 292% on the route-weighted index since 1999.

Osprey Population Forecast in Vermont

If the recent trend holds, Osprey in Vermont is projected to stay roughly flat through 2029, near 0.36 (95% range 0.15–0.57). A 5-year backtest shows a typical error of ±99.3%, with 40% of held-out values landing inside the 95% band.

-7%Change by 2029
0.36Projected 2029 index
0.15–0.5795% range
±99.3%Backtest error
19902029
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
20250.340.130.55
20260.340.130.55
20270.350.140.56
20280.360.150.56
20290.360.150.57

Osprey Survey Routes in Vermont

Routes recording Osprey in Vermont.
Grand Isle720241998
North Pownal120162016
Gaysville120122012
St Johnsbury119901990
Fletcher120222014
Bristol119991999

Osprey Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinaohiooregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvirginiawashingtonwest-virginiawisconsinwyoming

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