Beyond Pittsburgh, many pigeon species are tropical, and you can see about a dozen of them at the National Aviary — though their relationship to their local counterparts might not be obvious at first glance.
Animals from various lineages frequently reproduce in nature, which may help explain some of the evolution's riddles. Erica Larson, an evolutionary biologist at the University of Denver, claims that interbreeding across disparate lineages is the genetic cause of a hybrid species.
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Bubba is a palm cockatoo. He has lived at the National Aviary since 1998. On Saturday, his likeness was featured in a painting by artist Maria DeSimone Prascak of the South Side Slopes. She created it in 3 minutes and 25 seconds in what’s called speed painting — creating a