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How many eggs does an average bald eagle lay in a lifetime? The average Bald Eagle clutch size is just under 2 eggs / clutch (1.9). If we assume that a female eagle begins nesting at age 5, and lives until she is 25, she will have 20 years of egg-laying. There is no evidence that a healthy eagle reduces egg-laying as she gets older. So 2 eggs/year x 20 years = 40 eggs in her lifetime. â PN
1 Eagle eggs hatch one to several days apart depending on when they were laid. 2  Eggs hatch consistently after 35 days of incubation. 3  About 4 days before hatching the chick develops an egg tooth at the top of its bill. Eggs hatch consistently after 35 days of incubation. 2  About 4 days before hatching the chick develops an egg tooth at the top of its bill. 3  From inside the egg the chick pokes a hole in the membrane separating it from the air bubble at the top of the egg shell.