What is moulting?

Moulting is the name given to the process that takes place when birds shed their old feathers to make space for new plumage.

How long a bird will take to moult, and the length of time their moult takes is dependent on the species, age and time of year. 

Some birds moult all of their feathers in one go over the course of a few weeks, while others shed their old feathers gradually over the course of an entire year! More...