Donald S. Heintzelman Donald S. Autumn Heintzelman
There are forty species of hawks in North America, including vultures, the California condor, and the bald eagle, our national bird. Heintzelman's monumental study is a comprehensive survey of what we know about the migrations of these magnificent birds in North America, Central America, and the West Indies. After a general introduction on migration season, speeds, and methodology, eleven detailed chapters survey migration routes and statistics in all the following regions: eastern and western Canada, the Great Lakes area, New England, the Middle Atlantic states, southern Appalachia, the...
There are forty species of hawks in North America, including vultures, the California condor, and the bald eagle, our national bird. Heintzelman's ...
Silent predators of the night, owls are fascinating birds that play a crucial role in controlling rodent populations and maintaining ecological balance. In this carefully researched, well-illustrated book the first full-scale owl-watching field guide ever published one of the foremost American authorities on owls tells how to locate and study these remarkable birds. Birders will find expert advice and information on owl-watching equipment, owl pellets and food habits, migrations and invasions, survival adaptations, conservation, and more, along with 65 photographs plus other...
Silent predators of the night, owls are fascinating birds that play a crucial role in controlling rodent populations and maintaining ecological balanc...
