Because I live in the Hudson Valley, where birding is not just a hobby but a way of life, almost everyone I know keeps birdhouses in their yards. (At one point, my parents had six of them). But not ...

To lure swiftlets, whose saliva-built nests fetch high prices in China, people in Borneo compete to build them the most luxurious accommodations: safe, clean, dark and with pools for bathing. By ...