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32-40 cm (12Â½-15Â¾ in)
Small ponds and lakes with surrounding woodland. Winters on small ponds, lakes, and rivers inland, also in shallow bays and estuaries along the coasts.
They nest in tree cavities. The 5-10 eggs are incubated for 28-33 days; the young fledge at 45-55 days.
The diet includes crustaceans, molluscs, aquatic plants and fish eggs. It feeds by submerging and obtaining food underwater.
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