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

Brown-headed Nuthatch Population Trend in Tennessee

All statesForest birds

Brown-headed Nuthatch in Tennessee has surged: up 174% on the route-weighted index since 1994.

+174%Since 1994TrendPercent 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 →
14YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Brown-headed Nuthatch Trends in TennesseeNotable 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 →

Brown-headed Nuthatch has surged in Tennessee: up 174% on the route-weighted index since 1994.

Brown-headed Nuthatch Survey Routes in Tennessee

Routes recording Brown-headed Nuthatch in Tennessee.
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 →
Jones Gap220192006
Signal Mtn120242024
Oliver Spgs120102010
Climer119941989
Willis Sprng120122012
Mecca120182018
Collinwood120132013
Jasper120242001

Brown-headed Nuthatch Population Trend in Other States

alabamaarkansasdelawarefloridageorgialouisianamarylandmississippinorth-carolinaoklahomasouth-carolinatexasvirginia

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