492 TRAVELS OF A NATURALIST 



our arrival at Alexievka, on the river Delta, which is 

 indicated in our list by the first specimen preserved upon 

 the 17th of June, viz., a Siberian Chiffchaff — No. 549 of 

 our List. 



A fourth and fifth portion w^as our remaining time 

 spent in the delta and upon the Tundras, inclusive of 

 a visit to the Outer Banks of the Gulf of Petchora, and 

 two visits to Dvoinik, bringing us to the 30th of July and 

 to the close of our season. During the whole time we 

 collected or preserved 1,019 birds, inclusive of young 

 specimens. 



Of these — 819 were adults 



and 200 were young — 

 at present I leave out the latter in my analysis. 



This gives in all 819 adults to consider — i.e., of all 

 species met with — and excluding some 29 specimens, the 

 sex of which does not appear to have been ascertained, 

 leaving in all for consideration, 790 specimens of adults. 



Of these 790 adults— 578 were 3 s 



and 212 „ ? s 



790 



Now, of the above total, a proportion collected up to 

 the date of leaving Ust Zylma, and representing resident 

 and migratory species, within the dates 27th of March 

 and 10th of June, I find we collected and ascertained the 

 sex in the proportion of 213 .^^ s to 111 ? s. No birds had 

 in this time been found nesting, if we except one pair of 

 Eavens {juv. obtained, No. 342, June 2nd, at Ust Zylma); 

 onejuv. of Siberian Jays {juv. obtained. No. 343, also on 

 June 2nd) ; another of the same, two days after, June 

 4th ; and a nest of eggs of Magpie (Ust Zylma, 27th of 

 April), and S shot. 



This brings us in the List to about the 400th skin in the 



