Rule 34 Dev - ambiguous_gender beak border chest_tuft circle crescent_moon crown empty_eyes eye_markings feather_tuft feathered_wings feathers feral flying headgear markings moon open_beak open_mouth silhouette simple_background solo spread_wings tail tail_feathers three-quarter_view transparent_border tuft white_background wings sunnyclockwork european_mythology greek_mythology mythology scp_foundation mobile_task_force_alpha-9 avian bird mythological_avian mythological_bird mythological_creature mythological_firebird phoenix 2017 alpha_channel black_and_white digital_drawing_(artwork) digital_media_(artwork) monochrome|21666099035