When young Bald Eagles fledge, the event is the culmination of nearly a year’s work by the parents. Let’s recap how it might have gone: male and female build a nest over the winter. By March, they have two eggs. The female incubates the eggs for about a month, with the male taking an occasional turn. The result? A couple of tiny, three-ounce chicks. At eight weeks, they’re as heavy as the adults — 10 to 14 pounds. Two weeks later, they make their first flights. But it will take another 10 weeks of practice flights and provisioning by the adults before the young birds are ready to strike out on their own. 

More info and transcript at BirdNote.org. 

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