Simple categories matching avian:

• herbivore,
• connection,
• lineage,
• host,
• predator,
• fauna,
• serum,
• virus,
• scavenger,
• raptor,
• disease,
• group,
• insectivore,
• cell,
• male,
• prey,
• protein,

Members with property avian:

• owl,
• forest_raven,
• finch,
• hawk,
• black_vulture,
• bittern,
• magpie,
• grouse,
• turkey,
• australian_magpie,
• liver_cell,
• crow,
• pelican,
• chicken,
• raptor,
• eagle,
• larger_owl,
• giant_egret,
• chick,
• coot,
• fiscal_shrike,
• mammalian_predator,
• bushtit,
• psittacosis,
• otter,
• red_kite,
• mink,
• somatic_cell,
• bald_eagle,
• jay,
• raven,
• falcon,
• caracara,
• rabbit,
• moorhen,
• condor,
• kestrel,
• egret,
• american_crow,
• turkey_serum,
• avian_influenza,
• heron,
• northern_harrier,
• eider,
• pigeon,
• gelatin,
• northwestern_crow,
• cormorant,
• goshawk,
• bird_flu,
• swallow,
• reed_warbler,
• fox,
• cat,
• duck_cell,
• vulture,
• terrestrial_predator,
• cholera,
• feather_disease,
• tallow,
• shrike,
• raccoon,
• house-finch_disease,
• nest_type,
• merganser,
• avian_adenovirus,
• kingfisher,
• avian_pox,
• pied_crow,
• common_raven,
• raven_claw,
• blue,
• snowy_owl,
• coyote,
• kite,
• harrier_hawk,
• botulism,
• tuberculosis,
• chicken_serum,
• fibroblast,
• dog,
• physiological_difference,
• migratory_bird,
• eastern_equine,
• canaries,
• downy_woodpecker,
• goldeneye,
• grackle,
• tern,
• cooper_hawk,
• duck,
• deer,
• caspian_tern,
• buzzard,
• australasian_harrier,
• harrier,
• rodent,
• primordial_germ,
• wigeon,
• skunk,
• taxon,
• fish_crow,
• starling,
• young_blackbird,
• osprey,
• grey_heron,
• horse,
• cattle,
• goose,
• loon,
• pox,
• hawaiian,
• pelecaniformes,
• ptilonorhynchidae,
• flycatcher,