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.