You made the same mistake you had just spent the previous paragraph complaining of others making — confusing the noun and adjective. Also, in the sentence before the one I quote, you oddly capitalized the word mid-sentence.

Other typos you may want to correct:
– “or, a some primatologists have suggested” (or, as)
– “Humans have continuous courtship as to many birds” (as do)

Those minor things aside, it was an interesting read. Thanks.