A reader called excitedly to say, "I have a gorgeous little bird with a deep blue color on my feeder, but it's not as big as a regular bluebird. What is it?" I knew that a "regular" bluebird would ...

The song of the chingolo can be heard across South America. But young songbirds were no longer learning the tunes of their elders—until scientists stepped in. A rufous-collared sparrow, Zonotrichia ...

My favorite part of watching birds in spring isn’t about watching them at all — it’s about listening. Many of the assorted sounds we refer to generally as “calls” are not season specific. Alarm calls ...