268 BIRDS OF NORFOLK. 



from Mr. Stevenson's notes may be considered as 

 supplementary to Mr. G-urney's excellent papers on 

 the same subject in the " Zoologist " for 1850, p. 

 2775, and 1851, p. 3301 -."December 13th, 1865. On 

 examining the great northern diver at Sayer's [a 

 Norwich bird stuffer], killed last week, and one shot 

 last year about the same date, I find the beaks in both 

 birds small and more green than yellow. The feathers 

 about the head and throat have a downy appearance, and 

 the white on the sides of the head and throat is 

 powdered as it were with grey. In each also the back 

 is free from white spots, but each feather is dark in the 

 .centre, with a light grey edging, giving a variegated 

 appearance, and this I have also observed in black- 

 throated divers, having small beaks and downy head- 

 feathers. I believe these in both species to be young 

 birds that have never assumed the black throat. I have 

 never seen the great northeru diver with a black throat, 

 or any appearance of it in Norfolk ; they occur only in 

 the winter months." 



On the Norfolk coast this species is sometimes known 

 as the "herring loon." 



ADAMS'S DIVER (Colymbus adamsij. An example of 

 this form of the great northern diver, now in the collec- 

 tion of Mr. J. H. Ghirney, at Northrepps, given to him by 

 the late Mr. Abraham Scales, of Pakefield, which had 

 partially acquired the breeding dress on the back and 

 wing coverts, was killed off Pakefield, near Lowestoft, in 

 the early spring of 1852, and was exhibited at a meeting 

 of the Zoological Society (" Proceedings of the Zoolo- 

 gical Society," 1859, p. 206). Looking to what is 

 known of the home of this bird it could scarcely have 

 reached the place where it met its fate without passing 

 over Norfolk waters. But this is probably not the only 

 example of the form taken in the eastern counties, 

 for, on the dispersal of the contents of the Sudbury 

 Museum, the late Dr. Babington became possessed of a 

 specimen which there is strong reason to suppose was 

 obtained at the mouth of the Stour or the Orwell 



