Bubo virginianus. Lake Umbagog, Maine. 1894. The Great Horned Owls held high carnival this evening Sept. 23. beginning soon after sunset and hooting steadily until I went to sleep (10 P.M.). At one time three different birds were in hearing, two of them on the Outlet meadows, the third on Pine Point. Will Sargent tells me that they feed largely on Musk rats which accounts for their persistent attachment to these Outlet meadows. He says that they rob the trappers of many of their "rats" devouring them while in the traps.