<p>ATLANTA - From gay flamingos to fish that can give themselves sex changes, animals and their love lives are giving zoos a hot draw for the slow winter season - adults-only sex tours for Valentine's Day.</p>
<p>Zoos across the country are inviting grown-ups for cocktails and racy lectures about mating habits in the wild. The Valentine's Day events are so popular many zoos book weeks in advance.</p>