Mr. Dall obtained a female specimen of this Owl at Nulato, April 28, where it was not uncommon. It was often heard crying in the evenings, almost like a human being, and was quite fearless. It could be readily taken in the hand without its making any attempt to fly away, but it had a habit of biting viciously. It was frequently seen in the daytime sitting on trees. According to the Indians, it generally nests in holes in dead trees, and lays six spherical white eggs. Richardson informs us that it inhabits all the wooded country from Great Slave Lake to the United States, and is very common on the banks of the Saskatchewan. It was obtained in Canada by the Countess of Dalhousie, but at what season the bird was met with is not stated; the Smithsonian Institution also possesses specimens from the vicinity of Montreal. It probably does not breed so far south as that place, or, if so, very rarely. Mr. Audubon procured a specimen near Bangor, Maine, in September, the only one he ever met with. This Owl, according to Mr. Hutchins, builds a nest of grass half-way up a pine-tree, and lays two eggs in the month of May. A drawing, taken by Mr. Audubon from a specimen in an English cabinet, represents a nearly spherical egg, the color of which is white with a slight tinge of yellowish, and which measures 1.18 inches in length by one inch in breadth. The only authenticated eggs of this variety which have come under my notice are three collected at Fort Simpson, May 4, 1861, by B. R. Ross. One of these measures 1.28 by 1.06 inches. Nyctale acadica, BONAP. SAW-WHET OWL; WHITE-FRONTED OWL; KIRTLAND’S OWL.