Adelie penguin
Adelie penguin feeding his chick after he regurgitated part of its catch, probably mainly krill. The head of the starving chick disappears in his parent's throat!
The
penguin chick will be able to feed himself as soon as its juvenile down disappears, replaced by waterproof feathers allowing the penguin to dive into the freezing ocean.
On
Petermann island both Adelie and
Gentoo penguin live together in perfect harmony.