Rule 34 Dev - alphi_(nightbirby) animal_genitalia animal_penis anthro avian balls beak belly bird black_body blush blush_lines capcom corvid corvus_(genus) crow digital_media_(artwork) duo erection feathers fluffy flying_wyvern fur genitals hair hi_res hybrid knot machine male male/male mammal monster_hunter nargacuga nude open_mouth oscine passerine pecs penis photo_booth photo_shoot protogen simple_background smile tail verysleepycat villince_(nargacuga)|10816845448