Hummingbirds' wings 'shape-shift'

Footage shot with high-speed cameras has revealed how hummingbird wings bend and flex, to keep the birds in the air. Masateru Maeda, a PhD student at Chiba University in Japan, captured the footage. via Pocket http://www.bbc.co.uk/news/science-environment-23143678#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa