THE BIRDS 



OF 



ONGOLIA, THE TANGUT COUNTRY, 



AND THE 



SOLITUDES OF NORTHERN TIBET. 



By Lieut.-Col. N. PRJEVALSKY. 



[Continued from p. 53. J 



Order VI . GRALLiE (continued). 



232. ToTANUS ocHROPUS, L. Ulit travnic. 



Occurs throughout Mongolia, except the Ala-shan mountains, and seems 

 to arrive there about the middle of April, when it can usually be seen, either 

 singly or in pairs, on the shores of rivers or on marshes, but does not stop 

 to breed, although a few specimens have been noticed in the Hoang-ho valley 

 in the month of July. In Kan-su we saw it once in the end of September, 

 and never at Koko-nor, perhaps on account of our having been there only 

 late in autumn and early in spring. 



T. ochropus is rather common in spring in Ussuri from about the 20th of 

 April, when we met with a few birds at Lake Hanka. The autumnal 

 migration takes place in August. 



