Much of the surface was level; but here and there little chains of sandstone hills, rising two or three hundred feet, wound about. The trees were of immense height, and in many places beneath them one moved about as freely as in an English forest. Although this open vegetation is much more pleasant to traverse, it is not half so satisfactory for collecting purposes as the denser jungle, for it contains far less, both in variety and numbers, of birds and animals. Megapodes, singly, in pairs, or in little flocks, ran about and sought busily for food, calling to each other meanwhile, until, alarmed by the sight of such unwonted intruders as white men, they scurried swiftly away. Overhead, so high as to be almost out of shot, pigeons, grackles, and parrots fluttered and cried, while, running up and down the branches, we saw, for the first time, the Nicobar tupai or tree-shrew, a little insectivorous animal, which, at a casual glance, might be taken for a squirrel. They were very common; but, unlike their representatives in the Malay Peninsula, etc., which are ground animals, we saw them only in the trees.[71] It was soon evident that we had no cause to regret not having obtained more monkeys at Kachal, for here they abounded; and after discovering how common they were we would cold-bloodedly arrange every morning as to who should murder the specimen for the day. Here a new bird was added to the islands' fauna (and to science) in the shape of a little _Rhinomyias_, quietly clothed in dull-brown plumage, which frequented the undergrowth of dense jungle and possessed a rather sweet note. A momentary glance of a pitta gave for a few days (until we obtained a series of specimens) a fresh zest to collecting; this bird also was hitherto unrecorded from the locality, and proved to be a new species, although closely resembling _P. cucullata_. A short distance from the shore, some immense banian trees grew so high that the pigeons and parrots which swarmed in their branches for the fruit were often completely beyond reach of the gun. The trees possessed, moreover, some wonderful aëreal roots (70 feet high), and, standing on the edge of an open space within the jungle, offered an opportunity for photography too good to be passed by. While the plate was being exposed--an operation of some minutes--a diminutive pig, bearing a striking resemblance to the Andaman species, trotted out from the surrounding foliage and leisurely inspected the camera. It was the first of the kind we had seen, and I had to reproach myself with leaving my gun at the boat. Pulo Milo is only about half a square mile in area, but is thickly covered with a growth of pandanus and coconut trees and jungle, above which hundreds of tall slim palms have forced their heads.