Dumbledore frowned, leaning back in his chair as he pondered the question. "I’m not sure," he admitted. "It’s an usual thing that occurred. The Bell Jar was not something the ministry trialled on any person, so we are in uncharted territories," he said. "I can tell you the reason for its invention was something of a party trick. The person, in their hubris, had invented it to show off the very thing you may have seen...a bird hatching from an egg and dying before reverting back."