Ask Kenn!

Ask Kenn: Is There a Difference Between Bird Songs and Calls?

— Also this month: Why good bird habitat isn't always the same as good birding habitat.

Ask Kenn: Are American Robins Really a Sign of Spring?

— Long considered a harbinger of warmer weather, the robin's seasonal movements are surprisingly complex, writes bird expert Kenn Kaufman.

Ask Kenn: What is the Most Widespread Bird in the World?

— Seems simple, doesn’t it? Think again.

Ask Kenn: What’s Up With Bird Color Morphs and Phases?

— In some species, many adults wear different color patterns from others. Kenn Kaufman explains the phenomenon, and the lingo to describe it.

Ask Kenn: Do Migrating Birds Take the Same Routes in Spring and Fall?

— In this month's column, bird expert Kenn Kaufman explains the phenomenon of "loop migration."

Ask Kenn: Why Have Roseate Spoonbills Invaded the North This Summer?

— Also this month: Is fall really the hardest season for identifying birds? Kenn Kaufman doesn't think so.

Ask Kenn: Egret, Ibis, Flamingo, Heron, Stork—What's the Difference?

— Wading birds may appear similar, but looks can often be deceiving, explains Kenn Kaufman in this month's Ask Kenn!

Ask Kenn Kaufman: Why Do Some Birds Have Such Extreme Mating Rituals?

— While certain avian pairs dance to reaffirm their bonds, it's the bird world's bachelors that perform almost unbelievably ornate displays.

Ask Kenn: What Exactly Is a Warbler?

— Species bearing the name warbler are found around the world, but how they're classified can be complicated, explains bird expert Kenn Kaufman.
Illustration: Joe Ciardiello

Ask Kenn Kaufman: Are Yellow Northern Cardinals Becoming More Common?

— Also answered in this month's column: Why are some birds such better mimics than others?