meaning of dreams bird eagle vulture

In my dream, a giant bird which I can see as an eagle or a vulture was on a rooftop screaming. It was blueish-green and probably had a 40' wing span. as it began to flap, I tried to get my phone to take a picture. When I snapped the picture the bird burst into flames, still maintaining the bird form. Then a purple, lightning-like electrical field formed around it followed by an enormous cloud of black smoke which clouded my vision. It was intense, sort of scary, and I woke up sweating.