We have three young Yellow-eyed penguins at our rehab facility at the moment. They are chicks from this past summer and all are 'repeat-offenders', that is they have been in rehab before. After their previous release they didn't manage to work out fishing but were smart enough to return to 'our' bit of coast and sit where we would find them. They always remember how to eat nicely and only take 2-3 weeks to fatten up again for the next attempt. They are always instructed to come back if they need more help - and they do!! Clever birds!