44 1872 Feb. 12 Middlesex County, Mass... Watertown Dayton place saw a flock of 16 I. migratorius flying; a little further on saw a Collins brebis! The Pet on the topmost twig of a walnut tree directly over a Red squirrel, and every time the latter moved, looked down at him in a frightened way, nervously half-fanning his wings. Saw also a large flock of Sphy. modestula and a fine Buteo borealis in the Elmbridge Cemetery; the latter I tried to shoot but the shrill billy frightened him and he started before I got within range. Feb. 12 A perfect winter day, warm clear and still, which I spent among the birds. Started off with my collecting gun just after breakfast time. Over through the Cemetery where I started my old friend the Buteo borealis from the identical branch on which he sat both times before and discovered the attraction of this spot in an opening ditch of open water probably rich in rats; made a trap for him baited with a dead mouse. On "the farm" found a flock of three Amphispiza, a flock of fair Junco hyemalis, Cyanura cristata (Brown New), Sphy. modestula and Lams atricapillus. Along Mt. Auburn fence saw several Melospiza mel., and heard one warbling in a faint constrained tune, its spring song. Two Cuthia Am. I found on shooting was a pair; when one got separated any distance the other sends quite shriekers about it, uttering loudly pse-pse pse; creep, which being answered it flew to the foot of a neighboring tree & running up within a number of low congratulatory cots. When they found out watching that they would remain perfectly motionless & silent for many minutes looking like a set of brown larks, heard one or two