Six Trumpeter Swan cygnets were hatched at Cleveland Metroparks Zoo last week. The largest North American bird, Trumpeter Swans vanished from most of the United Sates over 100 years ago due to over hunting and lead poisoning. In 1996 the Ohio reintroduction program was started by the Ohio Division of Wildlife and the Zoo. The father of these new cygnets was part of this program and all six of these cygnets will eventually be released into the wild.