This happened a few weeks ago, in the house of a woman who was the teacher of my younger sister when she was taking swimming lessons. The woman lived with her daughter, her mother, and her grandmother.
There was a bird who would always stop by. They said it would visit often and sing for them in the mornings. It seemed specially fond of the daughter of my sister's teacher (let's call her Amy) and the teacher's grandmother. However, the elderly lady became horribly ill one day. The bird became sick as well and Amy cared for it.
As time passed, Amy's great-grandmother lost her ability to walk, and the bird had trouble flying, its wings became sore and the bird would feel pain when moving them.
Her health was getting worse and worse - and so did the bird's.
Amy's great-grandmother was beginning to gain high pressure. She was eventually taken to a hospital because her medical treatments were not enough. I went with them, being a friend of Amy. By the look of it, there was really nothing much to do. The doctors knew this as well, and they said so as mildly as they could so that it wouldn't sound like they should go ahead and give their last words.
When we were back at Amy's house, the first thing Amy and I did was to check on the bird. To our surprise, it was no longer there! The bird's cage was intact. It wasn't opened and it was covered by a veil, making it impossible for a cat to have gotten ahold of it. We searched for the bird but were unable to find it. We no longer heard its singing.
However, about two days later, Amy and I heard the bird (We were having a sleepover) and rushed outside.
There was no bird, but instead a rather foul smell. Under the bird's cage was none other than the bird itself. It was intact, yet dead. No sign of ants, no possible way that they could've gotten to the cage. Just a few minutes later, Amy's mother received a call from the hospital announcing that the woman who had been ill was now dead. It had been the same time and same day that the bird died. It came to announce the departure of the woman.