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For centuries biologists have tried to understand the underpinnings of avian migration: where birds go and why, why some migrate and some do not, how they adapt to a changing environment, and how migratory systems evolve. Twenty-five years ago the answers to many of these questions were addressed by a collection of migration experts in Keast and Morton's classic work Migrant Birds in the Neotropics. In 1992, Hagan and Johnston published a follow-up book, Ecology and Conservation of Neotropical Migrant Landbirds. In Birds of Two Worlds Russell Greenberg and Peter Marra bring together the world's experts on avian migration to discuss its ecology and evolution. The contributors move the discussion of migration to a global stage, looking at all avian migration systems and delving deeper into the evolutionary foundations of migratory behavior. Readers interested in the biology, behavior, ecology, and evolution of birds have waited a decade to see a worthy successor to the earlier classics. Birds of Two Worlds will complete the trilogy and become indispensable for ornithologists, evolutionary biologists, serious birders, and public and academic libraries.

The ultimate resource for birders visiting the ornithologically rich counties of Somerset, Gloucestershire and Wiltshire. These countries are among Britain's finest in terms of habitat diversity, and their avifaunas are comparatively rich as a result. Much has changed in the region since the previous edition of this book – the famous Avalon marshes, for example, have become one of Britain's finest hotspots for wetland birds, for example – but this brand-new fourth edition offers a completely updated review of all the major sites, and many more lesser known ones, with new text and fully revised maps throughout. Where to Watch Birds in Somerset, Gloucestershire and Wiltshire is indispensable for any birder looking to head out into this ornithologically special corner of England.

Nell Crane has never held a boy’s hand. In a city devastated by an epidemic, where survivors are all missing parts—an arm, a leg, an eye—Nell has always been an outsider. Her father is the famed scientist who created the biomechanical limbs that everyone now uses. But she’s the only one with her machinery on the inside: her heart. Since the childhood operation, she has ticked. Like a clock, like a bomb. And as her community rebuilds, everyone is expected to contribute to the society’s good . . . but how can Nell live up to her father’s revolutionary ideas when she has none of her own? Then she finds a lost mannequin’s hand while salvaging on the beach, and inspiration strikes. Can Nell build her own companion in a world that fears advanced technology? The deeper she sinks into this plan, the more she learns about her city—and her father, who is hiding secret experiments of his own. Sarah Maria Griffin’s haunting literary debut will entrance fans of Patrick Ness’s Chaos Walking series, Paolo Bacigalupi’s Ship Breaker, and Emily St. John Mandel’s Station Eleven.