Of the 4,000 or so species of mammals, only a handful of animals have ever been thought to mate for life.
Apr 6th, 2008 | 0 comments | 3,726 Views

Of the 4,000 or so species of mammals, only a handful of animals have ever been thought to mate for life.
"Extraordinary Birds" highlights the intimate links that people have forged with birds. In many instances, birds are more than just symbols -- they are companions.
Discover amazing birds -- from hummingbirds and peregrine falcons to parrots and barn owls -- on NATURE's "Extraordinary Birds."
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