Hi. I bought a parakeet at Petco a week ago and just yesterday he had a seizure and died. I had just added him to my cage with my other bird, George, when he started to fall off the perches in the cage. I assumed it was because his wings were clipped, but then he just kept falling, until he eventually, after a day of two, remained only on the bottom of the cage. I assumed he was just stressed out and left it alone, but a few days later, when George finally adjusted, he started holding him up all day. My new bird just slept all day, and when he started to fall through the cage bars on night I took him out and he died after having two seizures. What could have caused his death?