 Among other discoveries, the Urquharts learned that the butterflies only travel in daylight and can fly up to in a day.The trip north spans several generations of monarchs, while a much-longer-lived "super generation" flies from the northern reaches of the butterfly's range all the way to Mexico, overwinters there, and breeds in the spring to start the next generation flying north.Urquhart was born in Toronto on December 13, 1911.