My Ranger has some aarakocra-related backstory, but I'm not seeing the options available in her "Favored Enemy" selection lists...

Merfolk and Lizardfolk and a whole slew of Were-s are listed under 'humanoids' but the birdfolk are not? Theyre not listed in the non-humanoid list either, unless they fall under an unexpected category different from all the other playable races.....?

I don't know if its related, but on the race page for Aarakocra, it lists their languages as Aarakocra and Auran, neither of which are languages available in the Favored Enemy drop down either. I know Auran would be a dialect of Primordial now, but is an "Aarakocra" language actually a thing? If so, its not showing as an option. 

Would be fine if there was just a... fill in the blank option or something.

(and I have bought the Aarakocra race, so that's not what's preventing it)

I had similar problem when I tried to select Tabaxi as a Favored Enemy for my Tabaxi Ranger but couldn't. Would be nice if all humanoid races were options.