rule 34 2020 anthro anus avian balls bird blush bondage bound claws collar corvid digital drawing artwork digital media artwork duo european mythology feathered wings feathers furry galliform genitals greek mythology gryphon harpy herm hybrid intersex magpie corvid male mythological avian mythology nipple chain nipple piercing nipples open mouth oscine passerine penis phasianid piercing pussy shaded taur viridi wings 6677534