Thomas Alerstam Bird Migration (Paperback) - Picture 1 of 1
Thomas Alerstam Bird Migration (Paperback) - Picture 1 of 1
Bird Migration by Thomas Alerstam (Paperback, 1993)
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Author: Thomas Alerstam. Millions of birds migrate often very large distances to benefit from seasonal resource surpluses and to avoid predators and competitors. The first of the three main sections presents the life histories and migratory habits of nine different ecological categories of birds.