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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
One to three eggs are laid by bald eagles though there is at least a record of four eggs appearing in a Montana nest. Other instances of 4 eggs were known to result from two females laying in the same nest during the same season. Each egg is laid about 3 days apart. Incubation starts with the laying of the first egg.This is likely to offer full protection to the egg from encroaching crows or ravens and to ensure that the eggs don't hatch at the same time. Each egg also takes 35 days of incubation -- plus or minus a few hours.ach egg is laid about 3 days apart. Incubation starts with the laying of the first egg. This is likely to offer full protection to the egg from encroaching crows or ravens and to ensure that the eggs don't hatch at the same time.