In writing of nesting, it may be recorded that we obtained the eggs of the Tibetan Snow Cock (_Tetraogallus tibetanus_) from nearly 17,000 feet on the Pang La. At the Base Camp (16,500 feet), a Brown Accentor (_Prunella f. fulvescens_) commenced building its nest in a crevice between a stack of provision boxes in the middle of the camp on May 16. Laying did not commence till May 25—a long period of delay—and was completed with the third egg on the 27th. The hen commenced to sit at once, and no more eggs were laid. Norton observed Alpine Choughs and Rock Doves nesting in the cliffs above the Base Camp at an altitude of 17,000 feet. Besides the usual Ravens, and the species already named, the Base Camp was visited by Brandt’s Ground Linnet (_Leucosticte brandti_), a Sparrow, a Snow Finch, the Ground Chough (_Podoces humilis_), and the Shore Lark (_Otocorys alpestris elwesi_). Noel, during his vigil on the Chang La (23,000 feet), saw a small bird fly above him, borne on the Westerly gale. But Wollaston’s Lammergeyer maintains still the first place in altitude with a record of over 24,000 feet. At Trangso Chumbab, on June 11, I had the opportunity of observing the habits of Blandford’s Mountain-Finch (_Chionospiza blandfordi_). This bird seems to live in amity with the Pikas (_Ochotona curzoniæ_) in their burrows. I marked the birds bringing food to a Pika burrow, and wishing to see what the young in down were like, Finch and I commenced to dig out the hole. It proved, however, beyond our powers in the sun-baked ground, so I fell to watching again. We had laid open the burrow for about 2 feet. The hen-bird at once returned with food, but alighting at the spot where the burrow formerly commenced, began immediately to tunnel into the ground, quite oblivious of the true opening in full view only 2 feet away. What would our nature writers say to such a lapse of intellect? The bird burrowed with its beak, diving its head into the ground and boring with a very rapid jerky twist so that the sand was scattered in a small cloud. This was repeated several times and on several visits. I then filled up the trench, leaving the nesting hole open. On the next visit the bird flew down the hole, which I then stopped with loose earth. In the morning the burrow had been completely cleared and the birds were busily feeding their young again. This seems to point to the conclusion that these birds are naturally ground-dwellers, and are fully capable of making their own tunnels, but that the abundance of Pika burrows has induced lazy habits. Mandelle’s Snow-Finch (_Montifringilla mandelli_), not obtained by last year’s Expedition, was shot by us at Pika warrens at Phari (April 7), and seen, always associated with Pikas, on the following days.