I put up mosquito nets on my windows so I can at least have 1 window open for ventilation. Just gotta keep an eye on the bird in case they chew the netting or manage to fly out somehow!I'd really want that idea implemented in my house, but it's not always practical or possible in my case. Especially since I live in a hot country where you'd literally start to melt if your windows are closed or fans are off all the time.
But yes AC if it's unbearably hot oops!