Buteo pennsylvanicus. 1873. Maine (Lake Umbagog). Aug. 12. Shot an adult bird, moulting and in very ragged plumage, on the heavily timbered banks of Cambridge Ri- ver above the dam. " 10. Shot a young bird in perfect fall plumage on the bank of the Androscoggin at Errol. 1876. May 29. Shot a male which was sitting on the top of a tall stub in the woods. It uttered repeatedly a shrill pier- cing whistle sound ng like a croo-coco, croo-oo; some- times simply croe-croe. In the first instance with a decided accent on the last part of the utterance, which also ran up the scale. June 14. Started a pair from the ground in the edge of the woods bordering the Abbott clearing. They alighted on the tops of neighboring stubs, keeping up their shrill whistling cry as I approached. Without the advantage of any cover whatever I easily got within forty yards of them and shot the male. I often see these Hawks sail- ing in pairs high up in the sky almost invariably utter- ing their unmistakable note. The specimen killed to- day would not have bred apparently for sometime. Its stomach was filled with the bones of small mammals and fragmentary remains of Coleoptera. " 17. A hawks nest in the fork of a birch about fifty feet above the ground and evidently now and occupied, proba- ly belonging to this species although no bird was seen near it. 1879. May 29. A male shot on Cambridge River, just below B Meadow had the irides yellowish-white with an ashy tinge. His stomach contained the remains of a red squirrel. June 13. Several pairs seen on Cambridge River and a fine adult male shot on the top of a fir stub, its crop and stomach were empty: irides, pale brownish-white.