Penguin Kiss?

penguin-kissWhat’s with the kiss? Is beak touching a variation on what we call a kiss? So far, none of my penguin friends have answered this question. Admittedly, we don’t discuss deeply personal things. I’m not part of their inner circle. To them, I may simply be the crazy lady who visits to take photographs of them. Or, it could be that the word kiss is not part of their vocabulary.