BirdAnalyst
Species · BCR 14 · BBS 2025 Release · 1966–2024

Sharp-shinned Hawk In Atlantic Northern Forest

All regionsAtlantic Northern ForestGeneralists

Sharp-shinned Hawk in Atlantic Northern Forest has increased: up 29% on the route-weighted index since 1973.

+29%Since 1973TrendPercent 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 →
87Routes 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 →
52YearsYears 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 Sharp-shinned Hawk in Atlantic Northern Forest. See the full index history below.

Sharp-shinned Hawk In Atlantic Northern Forest Population Forecast

If the recent trend holds, Sharp-shinned Hawk in Atlantic Northern Forest is projected to stay roughly flat through 2029, near 0.04 (95% range 0.00–0.08). A 5-year backtest shows a typical error of ±54.6%, with 100% of held-out values landing inside the 95% band.

n/aChange 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 →
0.04Projected 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 →
0.00–0.0895% 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 →
±54.6%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, Sharp-shinned Hawk in Atlantic Northern Forest is projected to stay roughly flat through 2029, near 0.04 (95% range 0.00–0.08). A 5-year backtest shows a typical error of ±54.6%, with 100% of held-out values landing inside the 95% band.19692029
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 →
20250.040.000.08
20260.040.000.08
20270.040.000.08
20280.040.000.08
20290.040.000.08

Routes In Atlantic Northern Forest

Routes recording Sharp-shinned Hawk in Atlantic Northern Forest.
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 →
St DavidMAINE21994
HardwickVERMONT21994
BiddefordMAINE12009
NewcastleMAINE11985
Wilson MillsMAINE11997
TurnerMAINE12010
GreenwoodMAINE12018
South ArmMAINE12006
Otisfield GrMAINE12015
HartfordMAINE12011
Bowdoin CtrMAINE12000
ManchesterMAINE11995
East TroyMAINE12018
FreedomMAINE12002
HarmonyMAINE11985
EastbrookMAINE11985
HancockMAINE11979
AuroraMAINE11993
CooperMAINE12003
DebloisMAINE11997
CarrabassettMAINE12024
Seboomook LkMAINE12012
GreenvilleMAINE12013
CambridgeMAINE11997
BenedictaMAINE12022

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