BirdAnalyst
Species · New Jersey · BBS 2025 Release · 1966–2024

Northern Waterthrush Population Trend in New Jersey

All statesForest birds

Northern Waterthrush in New Jersey has declined: down 36% on the route-weighted index since 1980.

-36%Since 1980TrendPercent 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 →
8Routes 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 →
15YearsYears 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 Waterthrush Trends in New JerseyNotable 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 Waterthrush in New Jersey. See the full index history below.

Northern Waterthrush Survey Routes in New Jersey

Routes recording Northern Waterthrush in New Jersey.
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 →
Midvale219901986
Ramseysburg220231996
Pedricktown120052005
Kemah Lake119741974
Bloomsbury119961996
High Point120061978
Dover120152003
Pottersville119831983

Northern Waterthrush Population Trend in Other States

alaskaconnecticutidahomainemarylandmassachusettsmichiganminnesotamontananew-hampshirenew-yorknorth-carolinanorth-dakotaohiopennsylvaniarhode-islandvermontvirginiawashingtonwest-virginiawisconsinwyoming

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