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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
Using that number as a benchmark, the number of dead eagles annually from 1997 through June 2012 would amount to approximately 38,750 birds. Based on these admittedly crude estimations, at least 97 percent of the eagle deaths were attributable to causes other than commercial, land-based wind turbines.