Migratory Birds of the Great Lakes University of Wisconsin Sea Grant Institute
 about habitat birds + science 20 birds
aerialist raptors
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Ring-billed Gull Nest and Eggs

Ring-billed Gulls nest in colonies that may number in the tens of thousands; each pair of birds ends up with a nesting territory of about 10 to 40 square feet. The nest is a thin mat of dried grass or debris, about 12 inches in diameter and usually set in a scrape on bare ground. The birds lay 2-3 olive-gray eggs blotched with brown spots. Both parents incubate the eggs for 21 days, and chicks fledge between 4 and 6 weeks after hatching.