Asio accipitrinus. 1895. Maine. (bullies a Heron.) Sept. 22. Lake Umbagog. A little after sunset a Great Blue Heron, which had alighted, a short time before on the south beach began making a great out- cry. Presently it rose and ascended in circles to a height of 200 feet, or more followed, or rather preceded, by a Short-eared Owl which bullied it with amazing audacity, keeping always a little above it and swooping down every few seconds to deal it a blow on the back but whether with bill or claws I could not make out. The big, clumsy Heron was apparently unable either to dodge or to defend himself. At least he did nothing but continue to circle croaking incessantly and at each attack squalling so lusti- ly that he might have been heard a mile away. He was evidently badly frightened. The Owl must have been merely amusing himself for after a minute or two he left the Heron and shot off down on a long slant towards Richardson's Carry. Fifteen minutes later he reappeared skimming low over the Moose Point marsh, evidently hunting, every now and then giving three or four easy flaps of his broad wings but for the most part gliding smoothly on set wings just above the tops of the grasses inclining now to one side, next to the other and at length turn- ing short about and going back over the same ground, reminding me much of the Marsh Hawk when similarly engaged. Twice or thrice he rose sharply to a height of ten or fifteen feet then turning downward but not to the marsh again. This evolution