THE BIRDS 



OF 



MONGOLIA, THE TANGUT COUNTRY, 



AND THE 



SOLITUDES OF NORTHERN TIBET. 



By Lieut.-Col. N. PRJEVALSKY. 



[Continued from vol. ii. p. 438.] 



Order VI. GRALLtE (continued^. 



220. Grus monacha, Temm. 



Temm. & Schleg. Faun. Jap. pi. Ixxiv. 



Is very numerous during the spring migration in S.E. Mongolia — i. e. 

 between Lake Dalay-nor and the town of Kalgan; further west it does 

 not occur. It is very common about Lake Baikal, and must consequently 

 migrate thither along the borders of the Gobi desert. 



We saw the first migrants in S.E. Mongoha on the 15th of March ; but 

 the principal flocks appeared about the middle of April. A few of these 

 Cranes were seen also about Lake Hanka in spring. 



221. Grus leucogeranus, Pall. Juravl heley or sterch. 

 Temm. PI. Col. pi. cccclxvii. 



Only once (on the 9th of October, 1872) a flock of some fifty specimens 



