292 



observed on a freshwater-lake near Trondhjem; they had tåken 

 possession of an old nest of C. cornix, located in the top of a fir-tree. 

 The eggs being tåken, another set was deposited in the same nest 

 (recorded by Mr. Lundgren). 



Young w dotvn, (Total length 146 mm, culmen tarsus 25, middle 

 toe 33 + 4 mm) are distinguished from those of other species of 

 Lams by a large black spot ab o ve the base of the upper mandible, 

 u-liu li It iouches. This spot, though never absent, varies considerably 

 in size, sometimes extending over the entire feathered portions of 

 the upper mandible. In young almost full-grown it is plainly visible. 

 Plumage of body slightly tinged with yellowish, bill lightish horn- 

 brown, somewhat paler at the tip. There is also a black spot at 

 the base of the lower mandible, on either side. A more detailed 

 description as regards dress would closely resemble that of young 

 in down of L. marinus, fuscus, or argentatus. 



The stomachs of young in down have been found to contain 

 widely different substances. One brood (Folden FjordJuly Ist 1871) 

 were all gorged to the mouth with a species of an amphipodous 

 crustacéan (Hyale Nilssonii, Rathke); the stomach of another 

 contained insects only (larvæ of Noctuæ and Tipididæ) ; a third, 

 just hatched, had been fed exclusively on fish. 



At Bindalen, in Nordland, in the month of July 1871, when 

 observing a colony of this species, which had selected a wooded 

 promontory of the mainland for their breeding-haunt, I repeatedly 

 saw the old birds perch in the tops of trees. In rainy weather 

 dense flocks frequent the fields of the shore, to feed on Lumbrici. 

 Lar us argentatus, Lin. 



Like the foregoing species, resident and abundant up to the 

 Russian frontier. but is less frcqueutly found nesting on the shores 

 of freshwater-lakes. 



The nests are often located so low down among the rocks 

 as to be Bprinkled with the driving spray. In soine sets, all the 

 eggs are tinged with a peculiar shade of reddish, the spots, too, 

 being lighter than connnon. The ficsh of the young of this and 

 other species of gulls is tiaccid, watery, and stinks ol rish. They 



