The radial railway line brought many of Toronto's wealthy to Mimico's waterfront area, where several large estates were built. First and most impressive of which was the Featherstonaugh Estate which was shaped like a castle at the bottom of Royal York Rd. This period in which Mimico took shape was also the period in which Mimico's namesake, the passenger pigeon, disappeared from the area, the last known bird dying near the beginning of the next century in the United States. A Mimico resident, Mr. John Kay on noticing the disappearance of this species donated a stuffed passenger pigeon to the Royal Ontario Museum in Toronto to preserve some of the last evidence of what had been Mimico's namesake.