The Italian ecologist knew the trash hung from the nests of a certain bird, the black kite. But why? Many species of birds decorate their nests to attract a mate—but kites already have partners ...

Each year, these birds typically build new, bowl-shaped nests using leaves, rushes and reeds. But, while nesting in cities, they often supplement these natural, biodegradable materials with man ...

Since plastic never truly disappears, every bit of old nesting material remains as the birds stack new layers of material, one breeding season after another. Scientists have previously used ...

A neighbor had been hearing some strange sounds for more than a day; she was pretty sure they were bird calls and asked if I would come check it out. As I walked toward her house, I heard it, too, ...

began exhibiting "strange" behavior last month when staffers noticed the bird forming a nest and sitting on a large rock. Day after day, the determined bird sat on the rock, which was hospitably ...