<http://schema.org/alternativeHeadline>
"From tiny hummingbird nests to massive weaver nests that encompass entire treetops, take a photographic tour of these birds' impressive creations."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/wilderness-resources/stories/17-bizarre-and-beautiful-bird-nests>