BirdAnalyst
Species · BCR 28 · BBS 2026 Release · 1966–2025

Osprey In Appalachian Mountains

All regionsAppalachian MountainsBirds of prey

Osprey in Appalachian Mountains has surged: up 13× on the route-weighted index since 1975.

13×Since 1975TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
80Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
45YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for Osprey in Appalachian Mountains. See the full index history below.

Osprey In Appalachian Mountains Population Forecast

If the recent trend holds, Osprey in Appalachian Mountains is projected to stay roughly flat through 2030, near 0.10 (95% range 0.05–0.14). A 5-year backtest shows a typical error of ±42.4%, with 20% of held-out values landing inside the 95% band.

+0%Change by 2030TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
0.10Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.05–0.1495% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±42.4%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Osprey in Appalachian Mountains is projected to stay roughly flat through 2030, near 0.10 (95% range 0.05–0.14). A 5-year backtest shows a typical error of ±42.4%, with 20% of held-out values landing inside the 95% band.19702030
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20260.090.040.14
20270.090.050.14
20280.090.050.14
20290.100.050.14
20300.100.050.14

Routes In Appalachian Mountains

Routes recording Osprey in Appalachian Mountains.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Signal MtnTENNESSEE62025
Pine GroveALABAMA52025
GuntersvilleALABAMA52017
StevensonALABAMA52024
GreensportALABAMA42025
TalladegaALABAMA32025
OakmanGEORGIA32024
RiversideALABAMA22012
BetulaPENNSYLVANIA22022
Pocono SummitPENNSYLVANIA22022
GreentownPENNSYLVANIA22011
MarsPENNSYLVANIA22023
Mt OliveALABAMA11997
MaytownALABAMA12023
LakeviewALABAMA12025
CartersvilleGEORGIA12016
Mountain CtyGEORGIA12010
WilliamsportMARYLAND12024
HopeNEW-JERSEY11986
BloomsburyNEW-JERSEY12010
High PointNEW-JERSEY12000
RamseysburgNEW-JERSEY12022
WestbrookvleNEW-YORK12017
OneontaNEW-YORK11997
E NewarkNEW-YORK12024

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.