Portrait of Gentoo Penguin moulting - Falkland Islands ; During the moult, the new feathers push the old one out of the skin. The old one then open and fell. During this period, the penguins fast. They cannot go into the water as their plumage isn't waterproof.
Alain Mafart-Renodier / Biosphoto
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Image size: 5760x3840 pixels (19.2"x12.8" @300dpi)