Backyard feeders changed the shape of hummingbird beaks, scientists say : NPR
Hummingbirds gather around a hummingbird feeder filled with sugar water, in a backyard in the San Fernando Valley section of the city of Los Angeles, July 17, 2014. ROBYN BECK/AFP via Getty Images/AFP hide caption toggle caption ROBYN BECK/AFP via […]
Backyard feeders changed the shape of hummingbird beaks, scientists say : NPR Read More »