BirdAnalyst
Family · Haematopodidae · Charadriiformes

Oystercatchers Population Trends

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

Oystercatchers 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
American OystercatcherShorebirds+26%1974
Black OystercatcherShorebirds+205%1973