Following are all the ornithonym like words, in the list below.
ORNITHONYMY
100% like ornithonym
ORNIS
100% like ornithonym
ORNITHOID
99.99% like ornithonym
ORNITHOMORPH
99.99% like ornithonym
ORNITHON
99.98% like ornithonym
ORNITHURINE
99.98% like ornithonym
ORNITHOLITE
99.98% like ornithonym
ORNITHOIDICHNITE
99.97% like ornithonym
ORNITHUROMORPH
99.97% like ornithonym
ORNITHOPHILIA
99.96% like ornithonym
ORNITHICHNITE
99.96% like ornithonym
COCKBIRD
99.96% like ornithonym
OSTRICH
99.95% like ornithonym
CORNBIRD
99.95% like ornithonym
COMMON SNIPE
99.94% like ornithonym
BIRDLIFE
99.94% like ornithonym
SITTID
99.94% like ornithonym
FEATHERED FRIEND
99.93% like ornithonym
COMMON BLACKBIRD
99.93% like ornithonym
BIRD
99.92% like ornithonym
OVENBIRD
99.92% like ornithonym
AVIAN
99.92% like ornithonym
BIRDSONG
99.91% like ornithonym
ORNITHOPHAGE
99.91% like ornithonym
PRIMARY
99.9% like ornithonym
THAMNORNIS
99.9% like ornithonym
FALCONIFORM
99.9% like ornithonym
PALEORNITHOLOGY
99.89% like ornithonym
BLACK ORIOLE
99.89% like ornithonym
JARBIRD
99.88% like ornithonym
PASSERINE
99.88% like ornithonym
BIRD SONG
99.88% like ornithonym
PERCHING BIRD
99.87% like ornithonym
TICKBIRD
99.87% like ornithonym
NIGHT BIRD
99.86% like ornithonym
SNOWBIRD
99.86% like ornithonym
OXBIRD
99.86% like ornithonym
TAILORBIRD
99.85% like ornithonym
GAME BIRD
99.85% like ornithonym
BIRDLOVER
99.84% like ornithonym
WOODBIRD
99.84% like ornithonym
OTIDID
99.84% like ornithonym
ACCIPITRID
99.83% like ornithonym
COMMON STARLING
99.83% like ornithonym
ROSTRATULID
99.82% like ornithonym
BIRDE
99.82% like ornithonym
VANGID
99.82% like ornithonym
TICK
99.81% like ornithonym
SONGBIRD
99.81% like ornithonym
CAPRIMULGIFORM
99.8% like ornithonym
EOENANTIORNITHID
99.8% like ornithonym
TURNICID
99.8% like ornithonym
THINOCORID
99.79% like ornithonym
PENGORNITHID
99.79% like ornithonym
ORNITHORHYNCHUS
99.78% like ornithonym
DICKY-BIRD
99.78% like ornithonym
COLUMBIFORM
99.78% like ornithonym
WOODSHRIKE
99.77% like ornithonym
THORNBIRD
99.77% like ornithonym
ORNITHOPHILY
99.76% like ornithonym
AMERICAN ROBIN
99.76% like ornithonym
BIRDCALLER
99.76% like ornithonym
NICATOR
99.75% like ornithonym
ORNITHOSCOPY
99.75% like ornithonym
BIRDNAPPER
99.74% like ornithonym
PLUMAGE
99.74% like ornithonym
PASSERIFORM
99.74% like ornithonym
CHLOROPHONIA
99.73% like ornithonym
MEROPID
99.73% like ornithonym
OLD WORLD ORIOLE
99.72% like ornithonym
COMMON CHAFFINCH
99.72% like ornithonym
CORACIIFORM
99.72% like ornithonym
ANSERIFORM
99.71% like ornithonym
GREY FRANCOLIN
99.71% like ornithonym
STARLING
99.7% like ornithonym
FEATHERED FOLK
99.7% like ornithonym
GAMEFOWL
99.7% like ornithonym
NEORNITHINE
99.69% like ornithonym
COCKYOLLY BIRD
99.69% like ornithonym
ACCIPITER
99.68% like ornithonym
BLACKBIRD
99.68% like ornithonym
ANTBIRD
99.68% like ornithonym
BIRDLING
99.67% like ornithonym
HANGBIRD
99.67% like ornithonym
CATBIRD
99.66% like ornithonym
ROBIN-BREAST
99.66% like ornithonym
BIRDKIND
99.66% like ornithonym
ROOSTER
99.65% like ornithonym
LANDBIRD
99.65% like ornithonym
BIRD OF PASSAGE
99.64% like ornithonym
JACANID
99.64% like ornithonym
CROW-TIT
99.64% like ornithonym
MANTLE
99.63% like ornithonym
NESTING
99.63% like ornithonym
BIRDINESS
99.62% like ornithonym
APTERIUM
99.62% like ornithonym
SYLVIID
99.62% like ornithonym
RINGBIRD
99.61% like ornithonym
ENGLISH SPARROW
99.61% like ornithonym
FOWL
99.6% like ornithonym