265 



Neatly concealed among the moss on the ground in the Yenesei ^*»*- 

 valley, and built of dry grasses like the other Leaf Warblers' nests, 

 neatly Uned with reindeer and roedeer hair. In Dauria Dybowski found 

 the nest in Rhododendron scrub. 



These are 5 — 7 in number, white, thickly spotted at the big end, ^^«^ *'*°- 

 in the form often of an irregular zone of dark and lighter red brown 

 markings. Seebohm found eggs on June 26 on the Yenesei. 



Average size of 4 eggs in the Brit. Museum, 14.8 X 11.2 mm. Measure- 



[A southern form of this species, Hume's Yellow browed "Warbler, P. super- 

 ciliosus humei (Brooks), breeds in the Altai and Tian Shan ranges, Turkestan, and 

 Kashmir (Eggs figured in Br. Mus. Cat. Eggs. IV, pi. X, fig. 5, 6, and Dresser, pi. — , 

 fig. 21 — 23). For nesting notes by Brooks see Ibis, 1872, p. 24, etc. The eggs, 

 usually 5 in number, laid late in May or early in June, are like those of the N* 

 race, and 44 measured by the writer average 14.23 X H-2 mm. in size : Max. 15.2 X 11-2 

 and 14.7 X 12, Min. 13.2 X 11.2 and 14.1 X 104.] 



121. Pallas' Willow Warbler, Phylloscopus proregulus (Pall.) 



Plate 34, fig. 11 (Alexander Mts.). 



Eggs: J. f. 0., 1873, Taf. I, fig. 10. 

 Phylloscopus proregulus (Pall.). Dresser, B. of Europe, IX, p. 73 and 

 Man. Pal. Birds, p. 105. Saunders, Man. p. 63. P. proregulus prore- 

 gulus (Pall.). Hartert, Vog. Pal. Pauna, p. 523. 



Breeding Range: E. Siberia, from the R. Lena to the Pacific, 

 and N. to the Stanovoi range, but replaced by P. p. newtoni S. of the 

 great deserts of E. Asia. 



This bird has occurred once in Norfolk as well as on Helgoland dis- 

 and in Orenburg in E. Russia. Its breeding haunts are in the mountain Nest,etc. 

 forests of E. Siberia, from L. Baikal to the Stanovoi range. Dybowski 

 found it nesting in Dauria on the boughs of old moss covered pines, 

 close to the trunk, generally about 9 — 12 ft. from the ground. The 

 materials used were green moss and dry grasses, while the nests were 

 domed and lined with feathers and hair. 



From 5 to 6 in number, spotted with dark red, generally in the Eggs. 

 form of a zone round the big end, and a few ashy shell markings on a 

 white ground, and little or no gloss. 



Dybowski found eggs in mid June. He states that the hen begins ^"edmg 

 to sit as soon as the first egg is laid; so that sometimes fresh and in- 

 cubated eggs may be found in the same nest. The hen is a very close 

 sitter and can be caught on the eggs. 



According to Dybowski the eggs vary in size from 15 X 10.5 to Measure- 



, . , , ments. 



14 X 11 mm. 



