While most birds carefully nurture and protect their young, some species have evolved a more unconventional approach. Known as "brood parasites," these birds lay their eggs in the nests of other ...

Dr. Rohwer is the curator of birds and mammals at the Cornell University Museum of Vertebrates. Most birds go to great lengths to hide their nests. So when I find one, invariably so carefully crafted ...

The thunder rolled and lightning danced among the jagged peaks as a summer rainstorm soaked the alpine meadows of California’s Sierra Nevada. Our parkas were zipped tight and heads down as we plodded ...