Hawks fly at very high altitudes, sometimes over water, and thus their flight behavior and migration patterns are extremely difficult to study. Now, based on nearly ten years of research, this book provides the most complete analysis to date of how hawks migrate. Paul Kerlinger has employed both direct observations and radar techniques to obtain a much more accurate understanding of the migratory behavior of hawks and the "decisions" they make in flight. And, he has integrated data on the flight behavior of raptors in general with information about their ecology, physiology, evolution, and nonmigratory behavior.

Kerlinger begins with an overview, discussing ecology and geography, research methods, natural history, and evolution, and atmospheric structure. He then addresses specific aspects of flight behavior: aerodynamics, morphology, mechanics, direction, altitude, flocking, water crossing, speed selection, daily distance traveled, and flight strategies. Kerlinger describes each aspect of behavior quantitatively, testing mechanistic hypotheses. In conclusion, he examines how migrants integrate these behavioral components. Throughout the text he draws comparisons between the migratory flight behavior of hawks and that of other taxa. By means of such comparisons, researchers can gain insight into the selective pressures that shape the behavior of migrant species.

Hawks and owls, or raptors, as they are sometimes called, are charismatic birds. Ranging in size from the majestic bald eagle to the tiny northern saw-whet owl, these fascinating creatures occupy forests, woodlots, fields, and wetlands, as well as urban parks and tree-lined city streets. The adventurous peregrine falcon has even been spotted on the cliff-like skyscrapers and tall bridges of New York City and Philadelphia. Raptors are all around us-all we need to do is look for them at the right times, in the right places.

Southern central Chile supports one of the largest functioning indigenous societies in South America, the Mapuche, who have withstood more than four hundred years of persistent efforts at colonization and missionization. In spite of inevitable cultural and social change during those years, they have maintained a great measure of cultural and social integrity, and remain a regional, ethically conscious minority in Chile.
    The Mapuche, in their own words, are “another race,” with their own gods, their own notions of right and wrong, their own symbolism. Abiding by the rules of their society ensures their eternal place among the hawks of the sun.