Ornithological Researches in Siberia. 231 



No. 92. Four incubated eggs (3/16 July) :— 



/. 36-2 x 25-0 mm.>> Resemble No. 75, but the arrauge- 

 ment of the spots is as in No. 87 

 and the ground-colour is of a 

 clearer green. 



14. Tkinga minuta arrived on the 1/14 June. It breeds in 

 the latter half of June, and remains until late in the autumn. 



15. Tringa striata arrived on the T> T ' ' ? and as early as 



9 June' 



the 5/18 June a nest containing eggs was found. It remains 

 until late in the autumn. 



16. Tringa subarquata. — The Curlew-Sandpiper arrived 



on the -. „ X T ay and nested numerously in the district. Early 

 16 June 



in June they chased each other in threes and fours over the 

 Tundra. The nests were placed in grassy places, and con- 

 sisted of shallow depressions lined with a few dry straws and 

 a white tangle. In the middle of June the nests contained 

 full clutches of eggs. On the approach of a person the sitting 

 bird, warned by its mate, leaves the nest quickly, and both 

 birds remain very passive and unobtrusive. Usually the 

 observer has to wait long before the female decides to return 

 to her nest and thus betray its position, and often he has to 

 wait in vain. Some individuals of this species also wander 

 about in small flocks during the breeding-season, while later 

 both old and young collect in large flocks and remain until 

 late in the autumn. 



Description of the Eggs of Tringa subarquata. 



No. 60. Blunt pyriform, fiue-grained with a faint gloss. 

 Ground-colour pale yellowish white with a greenish tinge, 

 with large and small brown to blackish-brown spots, which 

 are more confluent, and to some extent quite confluent at 

 the thick end, and a few washed-out pale violet-grey spots. 



No. 60. Four fresh eggs (11/24 June) : — 



a. 36'7x25-7mm. 



b. 366x25-0 „ 



c. 38*3 x 25-1 „ 



d. 36-9x25-7 „ 



