Got to be flexible
When the yellow-eyed penguins return from fishing they spend a minimum of 10 minutes on the beach preening. This serves two purposes: one is recovery from the swim home. There is an oxygen debt to be paid for rigorous exercise. The second reason is that their magnificent feather coat requires maintenance to stay waterproof, so every feather needs to be fiddled back into place so the penguin stays warm and dry in the cold ocean.