Millennium Season Two had to be written and shot before Ten Thirteen Productions got word of whether it was going to be renewed for a third season. So they had to figure out a way to write an ending for the series (and the world) which maybe wasn't actually the end of the series (and the world).

Which they managed somehow to do, though of course it's disappointing when Season Three starts and the apparent Apocalypse turns out to have been a fizzle.

I still can't go near any dead birds I encounter.