A new study from researchers at the Smithsonian’s National Zoo and Conservation Biology Institute (NZCBI) shows environmental conditions in migratory birds’ winter homes carry over to affect their ability to survive spring migration and the breeding season. A new study from researchers at the Smithsonian’s National Zoo and Conservation Biology Institute (NZCBI) shows environmental conditions in migratory birds’ winter homes carry over to affect their ability to survive spring migration and the breeding season. Plants & Animals Ecology Phys.org – latest science and technology news stories