ABSTRACT
A medieval bestiary, known in fact as The Bestiary, simply refers to kindes and Hugh of Fouilloy's The Aviary written between 1132 and 1152, refers to species mof hawks there are two forms of the hawk the tame and the wild. Since opposed to Aristotle's method of classification, inasmuch as it allows for privative groups, this paragraph is perhaps more based upon the medieval understanding of logic from Boethius than directly upon Aristotle's own works, and may be considered spurious. The matter of accidents and essences applies here to utterances not species, and he notes that while a genus is the whole of which a species is a part, more universal utterances such as equivocation are not wholes in nature. There was little advancement on biological species concepts in the medieval period, which is usually delimited from 500 to 1500 ce.
