One of Google trends hot topics is dead birds falling from the sky. I’m not sure why people would be searching this. If I saw dead birds falling from the sky I would immediately try to get away form the area. The most probable reasons that I can think of that would explain dead birds falling from the sky would be some sort of sickness the birds caught, carbon monoxide poisoning (in enclosed space) , or radiation of some sort. If you are somewhere and you see dead birds falling from the sky I would recommend calling a hazmat team to remove the carcases. If multiple birds are dyeing midflight there is something wrong, and you should not touch, or go near the carcases without proper protection. A hazmat team would be able to safely remove the dead birds and clean the area. Dead birds falling from the sky is NOT a good sign. STAY AWAY from the dead birds CALL a service to clean them up.