Corthyia familiaris americana. Maine (Lake Umbagog). 1876. June 9. Several pairs among the stubs at the Outlet. 1879. May 31. copy 2 4-6 Nest with set of six eggs behind a scale of loose bark on the trunk of a dead fir. Height ten feet; female sitting; eggs incubated four or five days. After I had removed the nest-bark and all-the female returned, examined the spot where it had been, in evident bewilderment, then alighted at the foot of the tree and ascended it to the top, searching it closely. This she repeated at least a dozen times in succession. The song of this species is not powerful but exceedingly sweet and wild. It consists of four notes distinctly but rather quickly given and most resembles the song of Parus carolinensis. June 5. Set of six eggs incubated about six days; nest under a strip of bark on dead fir; height ten feet. I found it by following the female who flew to and from the tree a number of times, entering thonest and then again leaving it as if building. She uttered her shrill croop at intervals while I was taking the eggs. The male did not appear. “ 14. Nest with one fresh egg. copy 3 “ 14. A nest containing young which the mother was feeding. She made frequent trips to and from the tree going only a few yards away and always securing a billful of food for her brood on one of the neighboring tree-trunks. The young were absolutely silent when being fed. The mother watched me also in silence and without apparent alarm while I inspected the nest.. This nest was a stub that stood just outside that woods on the shore of the Lake, and surrounded by water. It was not over four feet above the surface of the water. Some of the materials of which it was composed hung down an inch or two below the bottom of the bark-scale. I also found that two nests, both old ones, behind the same scale of bark but on opposite sides. This piece of bark, was a huge sheet adhering to the trunk of a dead fir that stood in the water on the extremity of a point. One nest was probably a last year's one, it still contained an unhatched egg, bleached, and cracked. The other nest was evidently of older origin and probably built two years ago. I regard both those nests as the former homes of the same pair of birds that built the first nest found by me this season; the site of the latter being not over fifty yards away from this spot.