rule 34 anatid anseriform anserinae anthro avian beak bird cloacal penis closed eyes feathers genitals goose grey body grey feathers imperatorcaesar lying male membrane anatomy multicolored body multicolored feathers on back open mouth orange beak penis pink tongue presenting presenting penis simple background solo spread legs spreading tongue two tone body two tone feathers unsigned webbed feet webbed hands white background white body white feathers 6523304