Coyotes look before crossing a street. Black bears know when it’s trash day. The more scientists look, the more they find species adapting to urban life in unprecedented ways
a review of 83 urban wildlife studies across six continents
and two colleagues haul a culvert trap—a barrel-shaped steel cage that humanely captures black bears—into place near a hotel parking lot. They’re hoping to catch a mother bear with three cubs that lives in the area. Other studies paint a less ambiguous picture. Like the bears in Asheville, urban bears in Durango and Aspen, Colorado, as well as in Lake Tahoe, Nevada, weigh more and have more cubs, but their young rarely survive, resulting in net population declines. Seeing fat bears with a bunch of cubs may give the impression that urban growth and suburban sprawl benefit the animals, but the reality is different.
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