Many people assume that male songbirds are the ones doing the crooning. But more than 660 species of songbirds are known in which the females sing as well. And there are still 3,500 species of ...

New research suggests that populations of the Northern Cardinal —one of the most ubiquitous backyard birds in the United States— are undergoing speciation in two adjacent deserts. This study, which ...

It’s hard to resist a northern cardinal bird. They’re lively, bright and amazing songsters. Amid the browns, blues and greens of the natural world, northern cardinals are showstoppers. And in winter’s ...

Every morning at about 7 since late February, the cardinal has been singing its “Cheer, cheer, cheer” song in my yard. Now the American robin is singing, “Cheerily, cheerio,” adding to the growing ...