I always thought I was the only one finding a birds pack to specific/niche, where did you hide all that years?

I could see them do an animal pack just with birds now though, to be honest. Not that full blown 30 species thing some players want. Just a regular animal pack, with the option to add more later.
What the twilight pack does show to me, however, is that they might go the "easy" road for a lot of new stuff. Looped flying, a "nighthouse pack" without nighthouse mechanics and so on. And in all honesty? I don't mind. I still would trade 20-30 climbing items that function like a single enrichment item and looped animations on them with the buggy free climbing. Any time.