Range. - North America from southern British Provinces, southward; winters along the Gulf coast and beyond.
A well known bird, often called "quawk" from the sound of its note frequently heard in the evening. While, in some localities, only a few pairs of these birds are found nesting together, most of them gather together into large colonies during the breeding season. In New England they generally select a remote pine grove as their breeding grounds. If not disturbed they will return to this same place each year. Their nests are built of sticks and lined with small twigs, and are placed well up towards the tops of the trees.
Pale bluish green.
Black-crowned Night Heron. Yellow-crowned Heron.
Frequently several nests will be found in the same tree, and I have counted as many as fifty nests in view at the same time. In large swamps in the south they generally nest at a low elevation, while in the marshes of Wisconsin and Minnesota, large colonies of them nest on the ground, making their nest of rushes. Like all Heronries, those of this species have a nauseating odor, from the remains of decayed fish, etc., which are strewn around the bases of the trees. Their eggs number from three to five and are of a pale bluish green color. Size 2.00 x 1.40. Data. - Uxbridge, Mass., May 30, 1898. 4 eggs. Nest of sticks, about thirty feet up in a pine tree. Many other nests. Collector, H. A. Smith.