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EGGS A bald eagle egg is slightly smaller than a domestic goose egg. The chick will measure 4 to 5 inches at hatching and weigh only a matter of ounces. Bald eagles incubate their eggs for about 35 days. They begin incubation as soon as the first egg is laid.The second egg usually appears within 36 to 72 hours after the first.Occasionally a clutch of 3 eggs will be produced.he chick will measure 4 to 5 inches at hatching and weigh only a matter of ounces. Bald eagles incubate their eggs for about 35 days. They begin incubation as soon as the first egg is laid. The second egg usually appears within 36 to 72 hours after the first. Occasionally a clutch of 3 eggs will be produced.
Why do Bald Eagles have such big, strong nests when they have only two small eggs? Bald Eagles are about 3 feet (90 centimeters) from their head to their tail and before the nestlings leave the nest, they become as large as their parents and need a lot of room for their 6 foot (1.8 metre) wingspan.he first egg laid will be the first egg to hatch and therefore the oldest eaglet may be a little larger and better able to fight for food than the younger ones. How long do the nestlings stay in the nest? When do they learn to fly? Eaglets stay in the nest and are fed by their parents for 12 to 14 weeks.