We don't have synonyms for guinea fowls yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are guinea fowl and guineafowl.
(n) :
(countable) Any of several African birds of the family Numididae (6 species) resembling partridges.
(n) :
Alternative letter-case form of guinea fowl. [(countable) Any of several African birds of the family Numididae (6 species) resembling partridges.]
(n) :
(countable) Any of several African birds of the family Numididae (6 species) resembling partridges.
(n) :
Alternative letter-case form of guinea fowl. [(countable) Any of several African birds of the family Numididae (6 species) resembling partridges.]