Dang, this was awesome! It's why you got somewhat well known here! Anyway, I couldn't find any information on the first one. As for the second, it's mostly undetermined. Even Snopes has little info to verify it. It seems to be true.
"The Wizard Of Oz" is definitely fake. I heard about this before, and it is definitely a bird stretching its wings. I can see the stretching of the wings. The "Poltergiest" is true. However, two of those deaths weren't sudden at all.