Like the common and arctic terns, this species, although it has no breeding-grounds with us, breeds on either side in great numbers, and is a frequent visitor here, chiefly in spring and autumn.

Larus tridactylus [Kittiwake].

Breeds with us, but not in such numbers as formerly.

Larus eburneus [Ivory Gull].

Several specimens have been shot near Gamrie. It is a polar bird, almost pure white.

Larus canus [Common Gull].

Abundant during winter and spring. The gull may be met with all the year round, though I believe it does not breed with us.

Larus leucopterus [Iceland Gull].

Sometimes, during winter, a specimen of this northern bird may be obtained, but mostly in an immature state of plumage.