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absurd_res accipitriform ambiguous_gender animal_genitalia artificial_insemination avian beak binder_(restraint)bird bodily_fluids body_horror california_condor cloaca examination_table feathers feral_transformation genital_fluids genitals hi_res human_to_feral laboratory medical medical_instrument new_world_vulture open_mouth pain restrained restraining_table restraints scientific_experiment scientific_instrument silvergriffin21 solo species_transformation speculum transformation vulture what