SCOTLAND NECK -- The black-headed duck of South America is a lousy parent.
Rather than build its own nest, it simply lays its eggs in ones built by other birds, regardless of species, and never looks back. Left to fend for themselves, the ducklings somehow know to hatch at the same time as their stepbrothers and sisters.
"How it knows to do that, I don't know," said Mike Lubbock, founder of the Sylvan Heights Waterfowl Center on the edge of this small town 85 miles northeast of Raleigh.
This 18-acre zoo for birds - primarily ducks, geese, cranes and other water birds - has about 180 species on display. Each, like the parasitic black-headed duck, has a story.
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http://www.newsobserver.com/2010/08/31/656004/honk-if-you-love-water-birds.html