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

Northern Harrier Population Trend in Virginia

All statesGeneralists

Northern Harrier in Virginia has edged down: down 18% on the route-weighted index since 1984.

-18%Since 1984TrendPercent 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 →
11Routes 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 →
12YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Northern Harrier Trends in VirginiaNotable 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 Northern Harrier in Virginia. See the full index history below.

Northern Harrier Survey Routes in Virginia

Routes recording Northern Harrier in Virginia.
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 →
Quinby119841984
Star Tannery120162016
Taylorstown 2120172017
Wylliesburg119711971
Pungo119761976
Moran120072007
Blacksburg119971997
Chincoteag W120191996
Cape Charles119961996
Mannboro119901990
Sharps119971996

Northern Harrier Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradodelawaregeorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-dakotatennesseetexasutahvermontwashingtonwest-virginiawisconsinwyoming

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