Monday, October 18, 2010

Monogamy... a myth?

Great Hornbill pair
Seeing as how I just got hitched... I have the idea of  life-long commitment in mind. So for the October 11th show (click here for podcast) we covered the subject of monogamy in the animal world. Back in the day, animal behaviorists assumed that certain animals, particularly birds, were monogamous because they often witness pairs tending the nest. Little did they know that it was common for both males and females to sneak out for a rendezvous with another bird when their mate was not looking. These "cheating" events are termed "extra-pair copulations", or EPCs, and genetic techniques have revealed just how prevalent they can be! Perhaps one exception is the Great Hornbill (Buceros bicornis). The  impregnated females of this species enclose themselves into a tree cavity by plugging up the hole with mud and droppings. Her mate then delivers food to her and nestlings as the breeding season unfolds over 4 months! For a video depicting this process, click here.

 As for the news...

For the sound quiz, we heard from some critters that are known for their strong pair bonds, or lack thereof. They included the Great Hornbill, Golden-mantled Tamarin, Meadow Vole (in lieu of the Prairie Vole), and the Red-winged Blackbird (pictured).

Music artists featured included The Velvet Underground, Amandine, The Accidental Clearinghouse Story, The High Fidelity, Silver Jews, The Fidelity Wars, and more!

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