Research from Poland adds to evidence from Latin American countries that compounds in used cigarette butts ward off parasites in bird nests.

City birds are using cigarette butts in their nests to reduce parasites, but the toxic tradeoff may come with hidden risks ...

Nesting Cycle Chipping Sparrow nest by Red Wing Birding More than 700 bird species breed in North America, and the variations in their behaviors are fascinating and complex. Different species find ...