2026abstract_backgroundabsurd_resanalanal_penetrationanonymous_characteranthroanusavianballsbeak_kissbirdbuttclaydustcomicduoerectionfemalegenitalsglanshalftonehi_reshirundinidhumanhuman_on_anthrointerspecieskissinglarger_malemalemale/femalemammalmonochromenudeoscinepasserinepenetrationpenispresentingpresenting_hindquartersreverse_stand_and_carry_positionsegasexsize_differencesmaller_femalesonic_riderssonic_the_hedgehog_(series)standingstanding_sexswallow_(bird)vulvawave_the_swallow