the Birds of the Lower Petchora. 125 



appear to visit ; at least, there we did not meet with a single 

 specimen up to the 10th of June, when we left on our fur- 

 ther journey down the river. 



MOTACILLA ALBA, L. 



The White Wagtail appeared for the first time on the 12th 

 May, was plentiful while the migration lasted, and was 

 perhaps most numerous about the 17th and 18th. We did 

 not, however, find it plentiful afterwards, only a few pairs 

 haunting each village or farm ; but we traced it all the way 

 down the river as far as Alexievka. We got the first eggs on 

 the 15th June, at Abramoff. A nest of this bird taken at 

 Alexievka is similar in appearance to those found in Norway 

 and at Archangel, but is lined entirely with Reindeer^s hair 

 and two or three spider's cocoons. We did not find the White 

 Wagtail north of Alexievka. 



TURDUS PILARIS, L. 



The Fieldfare was first seen by us at Ust Zylma in flocks 

 on the 17th May; and we afterwards found it common as far 

 north as Stanavoialachta, where we saw the young birds fre- 

 quenting the scrub which clothes a great part of the slope of 

 the river-bank. We did not see it at Dvoinik. The first 

 eggs were procured by us at Habariki on the 3rd June. It 

 appears to be a somewhat later breeder here than the Red- 

 wing. 



TuRDUS ILIACUS, L. 



The RedAving appeared at Ust Zylma on the same date as, 

 and flying in the same flocks with, the last species. We did 

 not meet with it north of Stanavoialachta, though probably 

 it is to be found, and also the Fieldfare, on the lower islands 

 of the delta, which we did not visit. 



Cyanecula suecica (L.). 



The Swedish Nightingale is an extremely abundant species 

 in North Russia ; and in early summer it enlivens by its admi- 

 rable mimicry every patch of underwood in the forests of pine 

 and juniper on the sides of the valleys near Ust Zylma. It is 

 abundant also in the birch- and willow-thickets and swamps 



