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

Sharp-shinned Hawk Population Trend in Maryland

All statesGeneralists

Sharp-shinned Hawk in Maryland has surged: up 88% on the route-weighted index since 1972.

+88%Since 1972TrendPercent 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 →
16Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
20YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Sharp-shinned Hawk Trends in MarylandNotable 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 Maryland. See the full index history below.

Sharp-shinned Hawk Population Forecast in Maryland

If the recent trend holds, Sharp-shinned Hawk in Maryland is projected to fall about 41% by 2027 — from 0.07 in 2022 to a central estimate of 0.04 (95% range 0.01–0.07). A 5-year backtest shows a typical error of ±42.4%, with 40% of held-out values landing inside the 95% band.

-41%Change by 2027TrendPercent 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 2027 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.01–0.0795% 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, Sharp-shinned Hawk in Maryland is projected to fall about 41% by 2027 — from 0.07 in 2022 to a central estimate of 0.04 (95% range 0.01–0.07). A 5-year backtest shows a typical error of ±42.4%, with 40% of held-out values landing inside the 95% band.19702027
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 →
20230.040.010.07
20240.040.010.07
20250.040.010.07
20260.040.010.07
20270.040.010.07

Sharp-shinned Hawk Survey Routes in Maryland

Routes recording Sharp-shinned Hawk in Maryland.
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 →
Elkton220082008
Finzel220222001
Floyd119801972
Mt Nebo119861980
Northeast119971997
Potomac Park120131994
Smithsburg119901990
Easton120092009
Golden Hill120092006
Accident 2120222022
Bachman Mill119761970
Newark119711971
Eklo120062006
Jennings120191996
Steyer120092009
Green Ridge120052000

Sharp-shinned Hawk Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawaregeorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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