The bird had molted its feathers.

She molts her old skin every year.

Birds molt their feathers once a year.

The bird went through a molt and grew new feathers.

He molted his old skin and emerged with a shiny new one.

The snake molted its skin.

The bird is molting its feathers.

The molting process can be quite messy.

The moltings of the birds were scattered all over the ground.