BirdAnalyst
Family · Cuculidae · Cuculiformes

Cuckoos, Roadrunners & Anis Population Trends

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

Cuckoos, Roadrunners & Anis 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
Smooth-billed AniForest birds-94%1969
Black-billed CuckooForest birds-75%1968
Yellow-billed CuckooForest birds-40%1968
Groove-billed AniForest birds-40%1971
Greater RoadrunnerArid-land birds+7%1969
Mangrove CuckooForest birdsn/an/a