Not sure if the rules permit a link to another site, if not remove this, but while this is a Nat Geo vid it does show problems with habitat fragmentation on our migrating game.
http://news.nationalgeographic.com/news/2009/08/090813-pronghorn-migration-missions-video-wc.html
http://news.nationalgeographic.com/news/2009/08/090813-pronghorn-migration-missions-video-wc.html
