people may or may not know that I was born and raised on a farm north of London Ontario. My brother now runs it and I help out when I can. He had mentioned to me about the local mill using a drone for agricultural purposes. This drone is the same one that the OPP and 407 (used by OPP for the 407 use). to map out car accidents.
http://www.cbc.ca/news/canada/toronto/opp-testing-unmanned-flying-drone-1.1405733 (http://www.cbc.ca/news/canada/toronto/opp-testing-unmanned-flying-drone-1.1405733)
Then there is this one built by Yamaha.
http://rmax.yamaha-motor.com.au/ (http://rmax.yamaha-motor.com.au/)