I wish some of the crows in Seattle had those markings, ours are all black. A great read on the intelligence of Crows and related birds in the Corvid family is Bird Brains (http://www.amazon.com/Bird-Brains-Intelligence-Ravens-Magpies/dp/0871569566/sr=8-1/qid=1157240265/ref=sr_1_1/104-3628634-2482306?ie=UTF8&s=books)