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...
This is a fact sheet about the caribou. It gives a physical description of the animal, as well its breeding habits and range. It briefly explains the status of caribou populations in the United States.
Work of the Service; History; Climate change; Connecting People with Nature
This booklet describes the mission and work of the U.S. Fish and Wildlife Service and includes historical information and goals and objectives of all Bureau programs.
