The book Birds Up Close: An Engineer Explores Their Hidden Wonders reveals the marvel of how birds work—from the tips of their beaks to the sheen of their tail feathers. Consider feathers: They define birds’ wings, enabling flight. They insulate against cold. They repel water. They even control sound. And how feathers work is just one aspect of the wonders of birds explained by MIT engineering professor and lifelong birder Lorna Gibson in Birds Up Close.

Feathers, bones, bills, eggs, flight: all come in for scrutiny in this engaging book. What produces the iridescence of plumage? How does the internal structure of a bird’s bones make them lightweight? How do different birds use their bills and tongues—from woodpeckers penetrating the holes they drill to hummingbirds imbibing nectar, to sandpipers needling the sand, and to phalaropes drawing water droplets containing plankton into their mouths without sucking (no lips!)? What controls the shape of eggs? How do birds fly?

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