This species places its nest either high or low, according to the nature of the place selected for it, and the abundance of food in the neighbourhood. In the interior of swampy woods, in Lower Louisiana, I have found the nests placed on the tops of the loftiest cypresses, and on low bushes, but seldom so close together as those of many other Herons. On the Florida Keys, where I have examined more of these tenements than in any other part, I found them either on the tops of mangroves, which there seldom attain a greater height than twenty-five feet, or on their lowest branches, and not more than two or three feet from the water. In the Carolinas, they usually resort to swamps, nestling on the bushes along their margins. The nest is similar to that of other Herons, being formed of dry sticks loosely put together, a few weeds, with at times a scanty lining of fibrous roots. The eggs are generally three, never, in as far as I have seen, more, of a pale blue colour, inclining to green, thin-shelled, and averaging two inches in length by an inch and three and a half eighths in their greatest breadth. The young seldom remain in the nest until able to fly, as is the case with those of some other species, but usually leave it to follow their parents along the shores. If scared from the nest, they scramble along the branches with considerable agility, and hide whenever an opportunity occurs. I have given the figure of a young bird procured in October.
The differences between the periods at which this bird breeds in different latitudes, correspond with those observed with respect to other species of the same tribe. Thus, eggs and young may be procured on the Florida Keys six weeks sooner than in South Carolina, although two broods are usually raised in both districts, the birds frequently removing from one place to another for the purpose. The beautiful slender plumes on the head and back generally fall off soon after incubation commences, although I have on a few occasions found the male still bearing these ornaments when the female was sitting on her second set of eggs. When the young are just able to fly I have found them good eating, but the old birds I never relished.
When wounded, the Yellow-crowned Heron defends itself vigorously with its claws, the scratches inflicted by which are severe, and also strikes with the bill. If not brought to the ground, in a place where the trees are close and thickly branched, it is difficult to obtain them without a second shot, for they scamper quickly from one twig to another, and are very soon out of reach.
Wilson complains that the name “Yellow-crowned” should be given to this species, and this would almost induce me to suppose that he had never seen one in the breeding season, when the white of the head is strongly tinged with yellow, which however disappears at the approach of autumn, when the bird might with all propriety be named the White-crowned Heron.
The adult bird represented in the plate was shot by my friend Dr Bachman, a few miles from Charleston, while I was in his company; and the drawing of the plant was made by his amiable sister-in-law, Miss Martin.
Ardea violacea, Linn. Syst. Nat. vol. i. p. 268.—Lath. Ind. Ornith. vol. ii. p. 690.—Ch. Bonaparte, Synopsis of Birds of United States, p. 306.
Yellow-crowned Heron, Ardea violacea, Wils. Amer. Ornith. vol. viii. p. 26, pl. 65, fig. 1. Adult.
White-crowned Heron, Nuttall, Manual, vol. ii. p. 52.
Adult Male in spring plumage. Plate CCCXXXVI. Fig. 1.
Bill a little longer than the head, strong, straight, moderately compressed, tapering. Upper mandible with the dorsal line slightly arched and declinate, the ridge broad, convex, the sides bulging, the edges sharp and overlapping, the tip slender, with a distinct notch. Nasal depression wide, with a broad shallow groove extending towards the end of the mandible; nostrils basal, oblong, pervious. Lower mandible with the angle very long and narrow, the dorsal line straight and sloping upwards, the sides sloping outwards and flat, the edges sharp, obscurely serrulate, the tip slender.