Plate 31
The Brown Hawk
Buteo insignatus (Cassin)
Adult and young birds of this species were observed, and specimens were obtained by Dr. Heermann, who ascertained that it reared its young in California.
For an opportunity to examine the specimen originally described by us in the present volume ([p. 102]), we are indebted to our lamented friend and correspondent, M. McCulloch, M. D., a naturalist of extensive acquirements, and an eminent physician, late of Montreal, but, we much regret to add, now recently deceased, and to John Pangman, Esq., of Grace Hall, in the vicinity of that city. Mr. Pangman had the kindness to interest himself, in conjunction with Dr. McCulloch, so much as to obtain the loan of the specimen from the Natural History Society of Montreal, in the museum of which it was deposited, and to bring it for our inspection to Philadelphia, and we shall not soon forget his evident and enlightened gratification, nor our own great pleasure, when we assured him that it was a bird hitherto unknown as an inhabitant of North America, and, as we then supposed, very probably an undescribed species, which we subsequently ascertained to be the case.
This is one of the most remarkable of the rapacious birds which have been recently added to the ornithological fauna of the United States. It differs entirely in color from any previously-known American species, unless it may be supposed to approximate in that character to the little-known Harlan’s Buzzard of Audubon. It bears also some distant resemblance to one stage of plumage of the Black Hawk.
The only information relative to the habits of this bird that we have in our power at present to lay before the reader, is the following from the Journal of Dr. Heermann:
“I first remarked this species at the crossing of Graysonville ferry, on the San Joaquim river, California, and continued to meet with it occasionally until we had crossed Kern river. Owing to the lateness of the season, I was able to ascertain but little respecting its propagation; the only nests which were found having been forsaken some time previously by the young. These nests, composed externally of coarse sticks, and lined with roots, were built in the topmost branches of oaks, which grow abundantly on the banks of the large water-courses.
“This bird, like the rest of its genus, appears sluggish in its habits, perching for hours in a quiescent state on some tall tree, and permitting the hunter to approach without showing any signs of fear. This apparent stolidity may, however, be owing to the fact that it is seldom molested, and has not yet learned to mistrust a gun, as do the birds of prey in more settled portions of the country.”
The specimens brought by Dr. Heermann are now in the national collection at Washington city.