This is a guide to altricial passerines. It has an explanation of variables used for aging birds and an explanation of methodology employed, and provides information obtained while recording the early aging of the Dusky Flycatcher, the Carolina...
Fact sheets about marine mammals and the Marine Mammals Protection Act (MMPA). These animals include whales,dolphins, porpoises, seals, sea lions, walrus,polar bears, sea and marine otters, dugongs, and manatees.
