Animal Diversity 7th Edition

Published by McGraw-Hill Education
ISBN 10: 0073524255
ISBN 13: 978-0-07352-425-2

Chapter 19 - Review Questions - Page 422: 13

Answer

Altricial young are blind and naked at birth. They are also unable to walk. These birds remain in the next for a week or more. Precocial young (quail, fowl, ducks) are covered with down when they hatch. As soon as this down has dried off, they are able to run or swim. Both birds rely on their parents for some care, including food. Altricial chicks grow faster than their precocial counterparts.

Work Step by Step

Altricial young are blind and naked at birth. They are also unable to walk. These birds remain in the next for a week or more. Precocial young (quail, fowl, ducks) are covered with down when they hatch. As soon as this down has dried off, they are able to run or swim. Both birds rely on their parents for some care, including food. Altricial chicks grow faster than their precocial counterparts.
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