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Swan ReproductionSwans nest in the spring or early summer. Females lay 5-10 eggs and do most of the egg incubation. Incubation time is around 35 days. Cygnets weigh about 6 ounces at birth. After one day they are already able to swim. 
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Swan ReproductionSwans nest in the spring or early summer. Females lay 5-10 eggs and do most of the egg incubation. Incubation time is around 35 days. Cygnets weigh about 6 ounces at birth. After one day they are already able to swim.
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