28 The Official Guide to the 
only passing visitants to this county, and the 
Whiskered and Noddy ‘Terns are both represented 
by other than local specimens. ‘The Black Tern is 
another of those birds which is lost to us as a 
summer resident, and the White-winged Black Tern is 
a rare southern species, which occasionally appears in 
the neighbourhood of the Broads. 
Nearly allied to the Terns are the Gulls (Larrna), 
the first example of which is the beautiful Ivory Gull, 
a circumpolar species rarely found on the British 
coast. This is followed by the pretty Kittywake 
(Rissa tridactyla), one of our most common Gulls. 
Next are the Glaucous and Iceland Gulls, both Arctic 
species, the former sometimes met with off our coast 
in winter, generally in immature plumage, the latter 
of very rare occurrence. ‘The Lesser Black-backed, 
Common Gull (Larus canus), and Greater Black- 
backed Gulls are met .with all the year round; the 
first and last, as well as the Herring Gull, most com- 
monly in immature plumage. The fine Great Black- 
headed Gull here exhibited is not a British killed 
specimen; its home is the Mediterranean and Black 
Seas, and its claim asa British bird rests on a single’ 
occurrence at the mouth of. the Exe. Tie meu 
however, the Common Black-headed Gull, nests 
at Scoulton and Hoveton, and is probably our 
most numerous species at all seasons, The Little 
Gull—which also has a black head in the breeding 
plumage—inhabits Northern Europe in summer, and 
is only an occasional straggler to our shores; it is 
shown here in both summer and winter plumage, as is 
also the beautiful Sabine’s Gull, the last of the black- 
headed species. 
Of the Skuas or Robber. Gulls there is a fine series; : 
the first of the family, the Great or so-called Common 
Skua, will be found in the Lombe collection, Case 33. 
