In Pennsylvania and New Jersey, where the writer has had abundant opportunities for studying the species, these Vultures summer quite plentifully. From their first appearance, in March, large numbers may be seen high up in the air, moving in large circles, apparently exploring the ground below for their favorite articles of food. In rural districts they are, however, more frequently observed than in the vicinity of densely-populated towns, the greater abundance of carrion to be met with in the former places doubtless being the cause of this preference. But in California and Oregon, according to Dr. Newberry, they are quite as common near towns as about the large rivers. In our Southern States they visit cities and large villages, and play the part of scavengers in company with the black vulture. They are said to be so tame and unsuspicious in Kingston, Jamaica, that they roost upon the house-tops or prey upon offal in the streets. In country places they are no less familiar and trustful, as is evidenced while feeding. So intent upon their business are they at this time that the presence of human beings is unnoticed, and even when forced to forsake their booty they sullenly repair to a short distance, only to resume their feeding when the annoyance has passed. The common crow has been observed to gather around the same food, and the utmost good-feeling prevailed. A small flock will often settle down upon a dead horse around which several dogs have gathered. The snapping and snarling of the dogs, when they approach them too closely, do not cause the Vultures to retire, but only to step a few paces aside, when, nothing daunted, they continue their feeding, apparently oblivious of their whereabouts and surroundings. Although the sense of sight is rather keenly developed in these birds, yet that of smell is none the less so. This is an advantage, for both the visual and olfactory organs seem requisite in the determination of the presence of decaying animal matters. As a proof that smell leads to food-detection, Dr. Brewer cites an instance, on the authority of Dr. Hill, where several of these birds were attracted to the house of a German emigrant who was prostrated by fever, being drawn by the strong odor escaping from his neglected food which had become putrid. Mr. G. C. Taylor, whilst a resident of Kingston, sufficiently tested their power of smell. He wrapped the carcass of a bird in a piece of paper, and flung the parcel into the summit of a densely-leaved tree, that stood in close proximity to his window. A moment or two only elapsed, when the keen smell of these birds scented something edible, but they were unable to find it, obviously for the reason that it was hidden from view by the enveloping paper.