1) Ecdysis 2) Molt 3) Moult 4) Moulting 5) Shedding 6) Shedding feathers 7) Sloughing 1) Ecdysis 2) Molt 3) Moult 4) Moulting 
• (p. pr. & vb. n.) of Moult
Casting off feathers, hair, or cuticle. Molting is a process of sloughing or desquamation, especially the shedding of an outer covering and the development of a new one. This phenomenon permits growth in arthropods, skin renewal in amphibians and reptiles, and the shedding of winter coats in birds and mammals. ... (12 Dec 1998) ... 
The shedding of the exoskeleton of crustaceans in order to grow.
The process of dropping old feathers and growing new ones in their place. Most birds molt at least once a year, often in late summer. Also see prebasic molt.
The process of shedding all or part of the feather coat and replacing it with new growth.
the process of shedding an invertebrate