586 THE BIEDS OF HELIGOLAND 







showing this plumage was shot. That is preserved in my collection. 

 Young birds of the year, displaying the pretty striped markings 

 on the sides of the head, are shot frequently in autumn, but old 

 birds in winter plumage are very rare. 



The breeding area of this species ranges from about the eastern 

 half of Germany, through Denmark, Scandinavia, Finland, and 

 Lapland, to within the same parallels of latitude through Asia and 

 America. 



394. Sclavonian Grebe [GEHORNTER LAPPENTAUCHER]. 

 PODICEPS COKNUTUS, Latham. 1 



Heligolandish : Siedn= Silky (Grebe). 



Colymbus cornutus. Naumann, ix. 739. 



Sclavonian Grebe. Dresser, viii. 646. 



Grebe cornu. Temminck, Manuel, ii. 721, iv. 450. 



Of the five species of Grebe which visit Heligoland, the present 

 one is by far the commonest ; this remark, however, only applies to 

 birds in winter plumage ; old individuals in summer plumage I 

 have only obtained twice in the course of fifty years, the first being 

 an old, not very pretty female, which was shot on the sea, and 

 another afterwards, which during the night dashed against the 

 glasses of the lighthouse and was instantly killed. During late 

 autumn individuals in their first winter plumage are often shot, 

 and eld birds in pure white plumage of satiny gloss are met with in 

 the course of the winter, especially during severe cold. 



The breeding zone of this species seems to extend farther north 

 than that of any of the others enumerated ; it reaches to Finmark 

 and northern Lapland, and thence stretches across the whole of 

 northern Asia, as well as through the whole of the northern portion 

 of North America. 



1 Poicipes auritus (Linn. ). 



