BirdAnalyst
Species · BCR 29 · BBS 2025 Release · 1966–2024

Barred Owl In Piedmont

All regionsPiedmontGeneralists

Barred Owl in Piedmont has surged: up 158% on the route-weighted index since 1969.

+158%Since 1969TrendPercent 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 →
107Routes 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 →
54YearsYears 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 →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Barred Owl has surged in Piedmont: up 158% on the route-weighted index since 1969.

Barred Owl In Piedmont Population Forecast

If the recent trend holds, Barred Owl in Piedmont is projected to fall about 27% by 2029 — from 0.24 in 2024 to a central estimate of 0.18 (95% range 0.09–0.27). A 5-year backtest shows a typical error of ±28.8%, with 100% of held-out values landing inside the 95% band.

-27%Change by 2029TrendPercent 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 →
0.18Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.09–0.2795% 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 →
±28.8%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, Barred Owl in Piedmont is projected to fall about 27% by 2029 — from 0.24 in 2024 to a central estimate of 0.18 (95% range 0.09–0.27). A 5-year backtest shows a typical error of ±28.8%, with 100% of held-out values landing inside the 95% band.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 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 →
20250.170.080.26
20260.170.090.26
20270.170.090.26
20280.180.090.26
20290.180.090.27

Routes In Piedmont

Routes recording Barred Owl in Piedmont.
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 →
Stoney Point 2GEORGIA112024
WhitesburgGEORGIA32021
BowdonGEORGIA22011
Kite LakeGEORGIA22023
EmmitsburgMARYLAND22017
Silver SpgMARYLAND21987
Pleasant ValMARYLAND22017
Bachman MillMARYLAND22003
ClimaxNORTH-CAROLINA22014
ArcolaNORTH-CAROLINA22023
YoungsvilleNORTH-CAROLINA22023
EdenNORTH-CAROLINA22024
WilgroveNORTH-CAROLINA22024
SiloamNORTH-CAROLINA22012
OsmondNORTH-CAROLINA22018
GoldstonNORTH-CAROLINA22003
CollegevillePENNSYLVANIA22016
GreenwoodSOUTH-CAROLINA22017
PartlowVIRGINIA21994
Carters BrdgVIRGINIA22013
MillervilleALABAMA12008
LanettALABAMA12024
Liberty CityALABAMA12009
Liberty City 2ALABAMA12022
Nixburg 2ALABAMA12019

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