BirdAnalyst
Family · Turdidae · Passeriformes

Thrushes Population Trends

12 species tracked, ordered by long-term trend. Steepest declines first.

Thrushes species ranked by population trend.
TrendPercent 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 →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →History
Bicknell's ThrushForest birds-68%1968
Wood ThrushForest birds-62%1968
VeeryForest birds-43%1968
American RobinForest birds-8%1968
Eastern BluebirdForest birds+13%1968
Western BluebirdForest birds+38%1970
Gray-cheeked ThrushForest birds+167%1982
Townsend's SolitaireForest birds+202%1970
Hermit ThrushForest birds+218%1968
Mountain BluebirdForest birds+278%1969
Varied ThrushForest birds+591%1970
Swainson's ThrushForest birds+629%1968