Notes on the Ornithology of Caithness. 341 
were secured alive by some fishermen. This occurred in Ackergill 
Bay. 
Colymbus arcticus {Black-throated Diver), rare. 
Colymbus septentrionalis {Red-throated Diver)^ occasional. 
Podiceps cristatus {Crested Grebe) ^ rare. 
Podiceps rubricollis (Red-necked Grebe) , occasional. 
Podiceps cornutus {Horned or Sclavonian Grebe)., rare. 
Podiceps minor {Little Grebe or DdbcMck)^ common. 
Uria troile {Common Guillemot), common. 
*Uria lacrymans {Bridled Guillemot)^ common. 
Uria grylle {Black Guillemot), common. This bird lays two eggs, 
though Mr Newman, in his work on Bird-nesting, says one. (See 
Macgillivray's ^' British Birds.") 
Mergulus alle {Little Auk), occasional. 
Alca torda {Razor-bill Auk), common. 
Fratercula arctica {Fuffin), common. 
Phalacrocorax carbo {Common Cormorant), common. 
Phalacrocorax cristatus {Crested Shag or Green Cormorant), common. 
Newman says the shag lays five eggs ; I have never found but two. 
Sula bassana {Solan Goose or Gannet), common. 
Procellaria glacialis {Fulmar), rare. 
PuflSnus cinereus {Cinereous Sheariuater), rare. 
Puflfinus anglorum {Manks Shearwater), rare. 
Thalassidroma pelagica {Storm Petrel), occasional. 
Thalassidroma Leachii {Fork- tailed Storm Petrel), rare. 
Lestris skua {Common Skua), occasional. An individual of this power- 
ful species was long kept alive by Mr Osborne. It was a handsome 
bird, the plumage being always kept in beautiful condition. It was 
extremely bold and fearless, but continued intractable and savage 
to the last. Captured in the adult state off Staxigoe. 
Lestris pomarinus {Pomarine Skua), rare. 
*Lestris Hichardsonii {Richardson's Skua), common. 
Lestris parasiticus {Arctic Skua), occasional. 
Sterna hirundo {Common Tern), occasional. 
^Sterna arctica {Arctic Tern)^ only lately observed, but tolerably abun- 
dant. 
Sterna minuta {Lesser Tern), occasional. 
Larus minutus {Little Gull), rare. 
Larus ridibundus {Black-headed Gull), common. 
Larus marinus {Great Black-hacked Gull), common. 
Larus fuscus {Lesser Black-backed Gull), common. 
Larus argentatus (Herring Gull), very common. 
Larus glaucus {Glaucous Gull), occasional. 
Larus islandicus (Iceland Gidl), occasional. 
Larus canus {Common Gull), common. 
Larus eburneus (Ivory Gull), rare. 
* (Ivory GiUl), new (see page 347). This gull was found 
flying about a small inland loch, in a very starved condition. 
Larus rissa (Kittiiuake), common. 
Part II. — By Henry Osborne, Esq^., WicK 
(The specimens of the Blackcap and Parrot Crossbill were exhibited.) 
It will be observed, from the few additions made to 
the list of Caithness birds since 1840, that not much has 
