As lobsters grow, they moult their hard exoskeletons—often eating them—which means that they can reach astonishing sizes.
The moult, which precedes their metamorphosis, constitutes a crisis, as with the caterpillars of Lepidoptera.
Jack was caught two or three times, and Dan and moult as often.
This process is technically known as the moult and occurs at the end of summer in most birds.
Head black (with some white after the moult at Christmas), abdomen black.
They moult at the South, and the young pass gradually into adult plumage.
During a moult the cuticle of the head is cast separately from that of the body.
The little larvae remain together until after the third moult, at which time they are about half grown.
This is when the broken feather is to be imped merely for the purpose of the moult.
The colour change seems to be due to phagocytes devouring the pigment-bodies of the hair, and not to a moult.
also moult, mid-14c., mouten, of feathers, "to be shed," from Old English *mutian "to change" (cf. bemutian "to exchange"), from Latin mutare "to change" (see mutable). Transitive sense, of birds, "to shed feathers" is first attested 1520s. With parasitic -l-, late 16c., on model of fault, etc. Related: Molted, moulted; molting, moulting. As a noun from 1815.
v. molt·ed, molt·ing, molts
To shed periodically part or all of a coat or an outer covering, such as feathers, cuticle, or skin, which is then replaced by a new growth. n.
The act or process of molting.
The material cast off during molting.