FURVERT!

accipitrid accipitriform anus avian backsack balls beak bird butt duel_monster eagle erection feathered_wings feathers feet feral foreskin genitals greyscale hi_res humanoid_genitalia humanoid_penis konami looking_back lying male monochrome nervous nivy_(artist)nude on_front partially_retracted_foreskin penis penis_backwards perineum raised_tail semi-anthro simple_background sketch solo sonic_bird spread_arms spread_legs spreading tail tail_feathers talons toes white_background wings yu-gi-oh!