Ornithologists say the chirping of birds at daybreak is part of their mating ritual. They tell me that increasing daylight, especially in the spring and early summer, triggers the mating instinct in ...

A Black-capped Chickadee, a year-round bird in Milwaukee, perches on a branch at the Schlitz Audubon Nature Center. With the sun shining a little more lately, you may have noticed more birds chirping ...

Why do birds chirp so loudly in the early morning? I like to have my bedroom windows open, but the noisy birds seen determined to cause a harsh clatter. Ornithologists say the chirping of birds at ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. CHICAGO — If you’ve ever been up before the ...