Your species is exceptionally good at hitching lifts. An old colleague of mine tells me that it is necessary to appoint someone to check all the nooks and crannies of a helicopter prior to take off as penguins are inclined to hop aboard when nobody is looking, then make a mess on lift-off.
Mind you, they also have to go out and pick up the penguins who've fallen over backwards watching planes take off, as well as remember to close thre back door of the cookhouse because the little dears tend to march in and help themselves! If the door is closed, however, the penguins do knock. Loufly and insistently!