added birthday to profileFields

I've been using this module for a bit, and it's great, but there's a problem where I can't seem to retrieve both the profile picture and the user birthday. I add 'user_birthday' to the scope and it will be retrieved if I don't specify profileFields, but then the profile picture won't be returned. The only solution I can think of is to add birthday to profileFields, please let me know if this isn't the case