rule 34 anthro anthro only avian avian feet beak blue body blue feathers blue markings bodily fluids brown body brown feathers brown fur countershading dipstick feathers facial markings feathered crest feathered wings feathers female feral feral pred fur genitals green eyes gryphon gyrotech head crest head markings internal knot male malefemale male pred markings mask marking mythological avian mythology organs paws penetration penis quadruped same size vore serilde sex silent e stomach bulge tail tail tuft tuft vaginal penetration vore white body white feathers white markings wings yellow body yellow eyes zephyrus phoe 9121091