BirdAnalyst
Family · Stercorariidae · Charadriiformes

Skuas & Jaegers Population Trends

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

Skuas & Jaegers 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
Parasitic JaegerSeabirds-73%1985
Long-tailed JaegerSeabirds+829%1986