BirdAnalyst
Species · BCR 13 · BBS 2025 Release · 1966–2024

Osprey In Lower Great Lakes / St. Lawrence Plain

All regionsLower Great Lakes / St. Lawrence PlainGeneralists

Osprey in Lower Great Lakes / St. Lawrence Plain has surged: up 23× on the route-weighted index since 1985.

23×Since 1985
24Routes In Region
28Years

Notable Signals

long arc increasecomputed index

Osprey has surged in Lower Great Lakes / St. Lawrence Plain: up 23× on the route-weighted index since 1985.

Forecast

If the recent trend holds, Osprey in Lower Great Lakes / St. Lawrence Plain is projected to fall about 32% by 2029 — from 0.63 in 2024 to a central estimate of 0.42 (95% range 0.23–0.62). A 5-year backtest shows a typical error of ±38.4%, with 60% of held-out values landing inside the 95% band.

-32%Change by 2029
0.42Projected 2029 index
0.23–0.6295% range
±38.4%Backtest error
19722029
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
20250.380.190.57
20260.390.200.58
20270.400.210.59
20280.410.220.61
20290.420.230.62

Routes In Lower Great Lakes / St. Lawrence Plain

Routes recording Osprey in Lower Great Lakes / St. Lawrence Plain.
MacdougallNEW-YORK82024
Grand IsleVERMONT72024
Cicero CtrNEW-YORK32024
OrleansNEW-YORK22024
PulaskiNEW-YORK22019
OgdensburgNEW-YORK22024
WillsboroNEW-YORK22024
PhiladelphiaNEW-YORK22023
Herner CrnsOHIO22024
EspyvillePENNSYLVANIA22024
RomulusNEW-YORK11972
TrumansburgNEW-YORK12024
BranchportNEW-YORK12024
Canadice LNEW-YORK12023
MendonNEW-YORK12018
HamburgNEW-YORK12011
RandolphNEW-YORK12018
E YoungstownNEW-YORK11982
PenfieldNEW-YORK12013
N Victory 2NEW-YORK12016
NaplesNEW-YORK12015
CrescentNEW-YORK12019
North PownalVERMONT12016
BristolVERMONT11999

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