The blue pike went extinct in 1970 due to many human causes. This article outlines what happened to the fish and has some good thought-provoking questions at the end.

A profile of the extinct Great Auk is provided here by the Canadian Museum of Nature.

This site from the Canadian Museum of Nature, a natural history museum, provides short information blurbs and fun facts on over 240 different common animals categorized by type (mammals, fish, reptiles, invertebrates, amphibians,...