US declares 23 bird, fish and other species extinct
The ivory-billed woodpecker is among 23 species declared extinct by the US Fish and Wildlife Service (FWS).
The service has proposed removing them from the Endangered Species Act (ESA), which protects species under threat.
In all, 11 birds, one bat, two fish, one plant and eight types of mussel have been declared extinct.
The FWS said it had made the determination based on "rigorous reviews of the best available science for each of these species".
"Each of these 23 species represents a permanent loss to our nation's natural heritage and...