Rule 34 Dev - ambiguous_gender beak black_body black_eyes black_feathers cloud feathered_wings feathers feral flower flying gradient_feathers grey_body grey_feathers open_mouth outside plant sky solo tail tail_feathers text wings woodblock_print katsushika_hokusai avian bird cuculiform 1828 19th_century ancient_art japanese_text painting_(artwork) traditional_media_(artwork)|19629937880