Birds - v3.0 Update

Hopefully not annoying with these questions.

I’ve just started optimising my current game map and using Level Streaming as my frame rate is beginning to drag from having so much going on in my level.

I’m just wondering about birds. There is always going to be a persistant level plus the levels that get loaded in and out. I’m curious about the best practise for your Birds (and other AI). Should I have them in the persistant level or can I use them in other levels when they get streamed?

Thanks again man!