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Molt
biology
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Molt

biology
Alternative Titles: molting, moult, moulting, shedding

Molt, also spelled Moult, biological process of molting (moulting)—i.e., the shedding or casting off of an outer layer or covering and the formation of its replacement. Molting, which is regulated by hormones, occurs throughout the animal kingdom. It includes the shedding and replacement of horns, hair, skin, and feathers.

Lesser flamingo (Phoeniconaias minor).
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bird: Molting
The contour feathers are shed and replaced (molted) at least once a year, usually just after the breeding season. In addition, many birds…

The process of shedding an external skeleton for the purpose of growth or change in shape (see metamorphosis) is called ecdysis; it occurs in such invertebrates as arthropods, nematodes, and tardigrades.

This article was most recently revised and updated by Amy Tikkanen, Corrections Manager.
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