In the Chumbi Valley also we obtained the Great or Solitary Snipe (_Gallinago solitaria_), an addition to last year’s list. But my favourite family, the Redstarts, were the most interesting. The beautiful White-capped Redstart (_Chimarhornis leucocephalus_), mostly widely distributed in the Himalaya, was still with us. The Plumbeous Redstart (_Rhyacornis fuliginosus_) and the Blue-fronted Redstart (_Phœnicurus frontalis_) we had already obtained in Sikkim. These also were present at the beginning of April in the Chumbi Valley. We obtained in addition the beautiful Blue-tail or Red-flanked Bush-Robin (_Tarsiger rafiliatus_). I understand that the three latter species have not been previously recorded from this locality. The Blue-tail frequents dense bushes over marshy spots and is very quiet and furtive in its habits, while the Redstarts are the most obtrusive of birds, as to me they are one of the most beautiful of families. At Phari I luckily obtained a specimen of what I thought was the Indian Redstart, but the bird in the hand proved again to be the Blue-fronted sort. At 17,000 feet, above the Base Camp over the snout of the main Rongbuk Glacier, I saw a cock-bird of Güldenstadt’s Redstart (_Phœnicurus erythrogaster grandis_), fortunately a very easily recognisable bird, and one I had previously seen in Nubra and the Karakoram country. Although I had previously become somewhat familiar with bird-life in Tibet, I was not prepared to see the teeming flocks of finches, buntings, and larks which we met with on the bare stony uplands at every old camping ground or village we encountered. A portion of this swarming bird population appears to have been due to the spring migration being at its height. Of this we had evidence before and during our passage of the Jelep La, from Sikkim into the Chumbi Valley. At Phari and at Khamba Dzong especially, the birds appeared not yet to have dispersed in pairs to their breeding territory, but, though actually arrived at their destination, to be still collected in migration flocks. Yet this condition of things may be more apparent than real, for neither Norton nor I ever managed to find any evidence of nesting behaviour in such an extremely common bird as Brandt’s Ground Linnet. It is conceivable that the inimical climatic conditions of Tibet are such as to condemn a larger proportion than usual of the bird population to a celibate existence, a condition which is at least by no means rare even in the British Isles. A small piece of evidence is that the only four nests of larks and wagtails which I found contained only three eggs each, as if the altitude had reduced the number of eggs laid. It is to be noted that in each case the eggs were incubated, and so the clutches were presumably complete. But as an exception to this rule, at Chushar, on June 13, I found a nest of the Eastern Desert Wheatear with a normal clutch of five eggs.