Every autumn and spring, nature's ritual repeats itself as millions of ducks and geese take wing to migrate south for the winter or return north for the summer
Subtitle: 50 years
By: The Migratory Bird Conservation Commission
Contributors: United States. Migratory Bird Conservation Commission
Publisher: The Commission
Published: 1979
Place of publication: Washington, D.C
Language: eng
Subjects: Conservation of natural resources -- United States; Birds -- United States -- Migration; Birds -- Conservation -- United States