Ouija Board ?

We used to dabble a bit in ouija and also with table tipping. One night we were doing table tipping and conjured the spirit of my step dad's grandmother, who, she said, was on the couch with my dog. When she told of being on that couch, the dog looked a little freaked out and nervous... we continued to ask questions and a minute or so later we heard the most piercing scream--- sounded like that of a woman. We turned the lights on and my parakeet lie dead at the bottom of it's cage. We think the piercing scream actually came from the bird, but not sure what it saw or ? that made it do that and then die. Really creepy.