When I was younger, my grandfather told our whole family an event that he had witnessed in is home country (Slovakia) at his friend's house back in the 1960's I believe. To this day, I still have nightmares about it.
My grandfather was over visiting some friends who had recently had a very healthy baby. The four of them (my grandpa, the husband, wife and the baby) were sitting on the front porch one night, just talking and having coffee. The newborn baby was crying wildly, resting in it's bassinet beside the mother. Anyway, the house was facing a cemetery. They happened to notice a weird misty shape floating above a headstone in the cemetery and this misty shape had a likeness of that to a swan? Anyway, they continued their conversation and no matter how much the wife tried to hish the baby, the baby wouldn't be quiet. They also began to notice that this shape had been slowly floating away from the cemetery and towards the house. All of a sudden, the shape disappeared and there was a very strange strong gust of wind that blew towards the house, startling my grandfather and his friends. The wife noticed that the baby had all of a sudden stopped crying. She went to pick it up, and the baby wasn't breathing. And after calling an ambulance, it was declared that the baby had died moments earlier!