Marbled Murrelet - Major Life Events

Major Life Events

Marbled murrelets do not breed until they are at least 2 years old. Marbled murrelets nest from mid-April to late September. Peak activity occurs from mid-June to late July in California, and the second week of July to mid-August in Oregon. Marbled murrelet are semicolonial in nesting habits. Two nests found in Washington were located only 150 feet (46 m) apart. Not all mature adults nest every year. Marbled murrelets lay only one egg. The egg is incubated by both parents for about 30 days. Adults fly from ocean feeding areas to inland nest sites, mostly at dusk and dawn. They feed nestlings at least once and sometimes twice per day or night. Usually only one fish is carried to the young.

Nestlings fledge in 28 days. Young marbled murrelets remain in the nest longer than other alcids and molt into their juvenile plumage before leaving the nest. Fledglings fly directly from the nest to the ocean.

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