BirdAnalyst
Family · Phalacrocoracidae · Suliformes

Cormorants Population Trends

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

Cormorants 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
Pelagic CormorantWetland birds-81%1970
Brandt's CormorantWetland birds+154%1970
Neotropic CormorantWetland birds+155%1971
Double-crested CormorantWetland birds+177%1968