Swans may be famous for their monogamy, but even those famous love birds have a divorce rate of about 5 percent. But Laysan albatross? According to Jeffrey Black, author of "Partnership in Birds," albatross have a zero percent divorce rate! It could be that albatross are truly married for life. And no wonder: they don't start looking for a mate until between 5 and 7 years of age, and once they do start looking, it takes several years of extensive courtship dances to find just the right partner. So this is perhaps the one bird species that defies the odds — and serves as a counterpoint to this gallery — and truly mates for life.