BirdAnalyst
Family · Podicipedidae · Podicipediformes

Grebes Population Trends

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

Grebes 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
Western GrebeWetland birds-71%1988
Horned GrebeWetland birds-40%1971
Clark's GrebeWetland birds+21%1988
Pied-billed GrebeWetland birds+54%1968
Least GrebeWetland birds+115%1972
Red-necked GrebeWetland birds+756%1971
Eared GrebeWetland birds77×1969