416 Oluf Winge. 



movements evidently hawking for small insects (the weather 

 was calm, damp, and mild); some Xema ridibundiim (most 

 young) among whicb it often passed were on the contrary 

 busy to pick, up small things from the water. Shape in 

 flight very like that of Xema ridibundiim, but wing-strokes 

 much quicker. (W.) 



Adult male in winter-dress shot at Kjerteminde, Fyen, 

 a couple of davs previously to October 2 ist, presented in 

 the flesh to the Zoological Museum by Mr. Job. Larsen 

 of Kjerteminde. 



150. Xema ridibundum, L. — Hättemaage. 



Kjöbenhavn. Breeds. — On Sound in January a few, 

 old and young, on gth, lyth, and 3ist. February i4th a 

 large flock, most old, some young; 24th many old, some 

 young. March 8th some old and young, two old with a little 

 brown on head ; thus also on i8th; 25th one old with füll, 

 hood ; 28th many old with füll hoods, very noisy. — Au- 

 gust 4th and i3th old birds with hood in moult; September 

 2 ist with pure white head. — Throughout October to 28th, 

 most young. November ist, 2d, and i ith a few young. De- 

 cember 2 ist one old, one young. (W.) 



Amager. On northern part of east coast April iith 

 and i8th some, 26th many; July 4th many, 24th some. 

 July i8th some outside west coast. (K.) 



Viborg. I have not found it breeding, but I have often 

 Seen larger and smaller flocks on Viborg So and other 

 lakes; thus very numerous on Vejrum So May jth. (F.) 



151. Sterna anglica, Mont. — Sandterne. 

 Thy. During August several times considerable num- 

 bers, both old and young; at Voldum So, and in the Kjär's 

 of Heltborg, Dover, and Ballerum. (K.) 



152. Sterna argentata, C. L. Br. — Havterne. 

 Kjöbenhavn. First young in North Harbour July lyth, 

 two, with their parents. — September iith a young Tern, 

 St. argentata or fluviatilis, much later than usual. (W.) 



