white on the outer web of the external tail-feather, which is only a little paler brown than elsewhere. The abdomen is much more distinctly yellowish.
Habits. This species was first discovered in the vicinity of Fort Tejon, Cal., by Mr. Xantus, in 1858, and described by him in the Proceedings of the Philadelphia Academy. It has since been taken in other parts of California and Mexico. Sumichrast found it in the Department of Vera Cruz; and Dr. Coues has taken it in Arizona, where he regarded it as a rather rare summer resident, arriving late in April and remaining until the third week in October.
Dr. Cooper obtained a single specimen of this species at Fort Mohave, May 20. It closely resembled E. obscurus in its habits at that time, and he mistook it for that species. He afterwards met with others, as supposed, of these birds, on Catalina Island, in June. They kept in low trees, and uttered a few faint lisping notes. The first of this species arrived at Santa Cruz, March 13, and they were numerous during the summer, disappearing in September. April 27, Dr. Cooper found the first nest. It was built on the horizontal branch of a negundo-tree, about eighteen feet from the ground. He found four others afterwards, from four to ten feet high, either on horizontal branches or on forks of small trees. They contained three or four eggs each, or young. The last one with eggs was found as late as June 29, probably a second nest of a pair that had been robbed. These nests were all thick walled, composed externally of dry mosses and downy buds, with a few strips of bark and leaves, and slender woody fibres, and often with a few hairs or feathers lining the inside. Externally the nests were about four inches wide and two and a half high. The cavity was two inches wide and one and a half deep. The eggs were white with brown blotches and specks near the larger end, disposed mostly in a circle. They measured .68 by .52 of an inch.
These birds, he further states, frequented only the darkest groves along the river, and had a very few simple call-notes of a monotonous character. They were so very shy that he could not get near enough to determine the species, which in all probability was not this species, but the E. pusillus.
The E. hammondi was met with by Mr. Ridgway only in the East Humboldt Mountains, where, in September, it was found in the thickest groves of tall aspens. It seemed to be confined to these localities, and was much more secluded than the E. obscurus. Its common note was a soft pit.
A number of nests and eggs sent, with the parent birds, from Lesser Slave Lake, by Mr. Strachan Jones, show that its eggs are unspotted creamy-white, like those of E. minimus and E. obscurus. Indeed, a number of nests and eggs of the former of these two species, also accompanied by the parent birds, could not be distinguished, except by their apparently just appreciably larger size, on the average.
Mitrephorus, Sclater, P. Z. S. 1859, 44. (Type, M. phæocercus.)
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