Prediction? That's pretty bold. Are you sure this isn't just a wishlist, as Swjos says?
First of all, we're not going to get two animal packs in a row. The whole point of the animal packs is to create a fair balance between those of us who are more interested in expanding the animal roster and those of us who prefer building. It's more likely that we'll get two animal packs and two scenery packs this year as we did last year. As for what's coming next, that is anyone's guess. I have a feeling it will be a general Asia Animal Pack, or a Middle East Animal Pack, but that's just a wild assumption with no real rationale behind it except that both these regions need further exploring.
As for an aviary "expansion" - that isn't likely. As as has been pointed out numerous times, we don't actually need a full expansion pack for birds. An animal pack with eight species, accompanied by a free update giving us "covered habitats" (rather than single-use aviaries), would be more than sufficient as a base, and fits Frontier's modus operandi much better than believing they will randomly do a big expansion pack. I'd even say that a small scenery pack with four flying birds is more likely.
Your animal choices are fine, if that's what you personally want, but calling it a 'prediction' is a bit much.