In this edition of Field Talk, we catch up with Ethan Temeles, a biologist at Amherst College, who tells us a tale of competition among the sexes in Caribbean hummingbirds – competition so severe that it drives their evolution. The short, straight bills of male purple-throated caribs and the long, curved bills of female caribs [...]

Battles of the sexes [ 9:40 ] Play Now | Play in Popup | Download

Invasive red fire ants from South America have become a major pest in southwestern U.S., bringing their stinging venom and crop-destroying ways. In this edition of Field Talk, we catch up with Tracy Langkilde, assistant professor of biology at Penn State University, who studies one of the ants’ seemingly unlikely targets: eastern fence lizards. The [...]

Lizard Evolution and the Ants In Your Pants Dance [ 9:36 ] Play Now | Play in Popup | Download