Quote:Swallows that nest on roadsides appear to have evolved shorter wings to help them maneuver better and avoid cars, claim a team of scientists from the University of Tulsa in Oklahoma.in
[...]
The results, published in Current Biology, show that the wings of vehicle-killed birds have lengthened over time, while those which died accidentally in nets—and are representative of the entire population—developed shorter wings over time.
http://gizmodo.com/5991279/swallows-seem...t=58389216