31 UPTON, MAINE 1872 June 2 - 14 14. Parus Hudsonius. Found them rather frequent in a certain tract of fir and spruce forest near the lake. This bird must breed twice in the season as several specimens in so perfect plumage that no external marks distinguished them from the adult were clearly shown on dissection by the rudimentary con- dition of the genital organs and the softness of the skull to be birds of not more than three or four months of age, while other of both sexes were taken with those organs excited to the highest degree although none of them had, I think, actually laid. The young went in companies of six or eight frequently accompanied by a pair of P.atricapillus: they kept invariably in the thickest spruce trees usually near the top and were very silent, quiet and hard to detect: they had all the motions of P.atricapillus though perhaps a trifle less lively and animated, and the same emphatic chirp. Another note they also used which possibly was the song of the mate, a single che-day day, very different from anything I ever heard from the other bird. Chrysomitris pinus. Saw it twice, June 13 and 15. (Very abun- dant everywhere in company with C.tristis in 73). Curvirostra americana. Heard them passing overhead about June 13. (Abundant and generally distributed in 73.) Passerculus savanna. Common all the way up from B. On the very top of the great hill above the lake found these breeding in colonies in the dry mowing fields of English grass: I think there must have been at least fifteen or twenty pairs in our enclosure.