Alcidæ.--Records in every month, except February and December. Spring: Great numbers. Razorbills flying north on Jan. 7th, at Skervuile. Puffins seen at Butt of Lewis March 3rd. "Rock Birds" in April, all day, flying south at Ushenish, and arrive last week in April; breed first week in May. Hundreds of Puffins flying south on May 10th and 11th at Ushenish. "Auks" flying south at Skervuile. "Puffins" at Dhuheartach on 2nd and on 20th. Auks, Puffins, &c., at Ushenish, Skervuile. Earliest July 31st; latest Oct. 18th, 19th, and 20th, at Ushenish. Rush: Thousands at Ushenish, along with Gannets and Kittiwakes, feeding and flying south all day. Great Northern Divers.--Spring: At Skerryvore, two seen in June. Autumn: At Sound of Mull two seen feeding, male and feeding; at same place, two on 10th. General Remarks. In 1879 there was scarcity of birds at many important stations, such as Butt of Lewis and Monach Island, Skerryvore and Dhuheartach. In that year westerly and N.W. winds prevailed. In 1880 larger numbers were noted. In that year easterly gales and winds prevailed all through the migratory season. In 1879 migrants were scarce at the more northerly stations, being compressed by the westerly winds more towards the south, but in 1880 they reached much further north, being expanded by the following easterly gales and winds, as we have seen in treating of the east coast of Scotland this year. The stations visited by the largest numbers of birds are the Bell Rock and Isle of May, both being stations pretty far southward, and Pentland Skerries, a more northern station. We now find also that on the west coast the stations sending fullest numerical returns are also southerly stations, and for the most part are situated south of the Firth of Clyde. Both on east and west coasts all returns coming in from north of Firth of Clyde in west, and north of Firth of Tay in east, except Pentland Skerries, report scarcity of birds as compared with last season (1880), and after November birds were unusually scarce. Writing from North Ronaldshay Mr. Tulloch tells us that birds seldom come so far north during migration, but usually trend more towards the mainland. On the west coast, at Rhu Stoir, very few birds are reported after November in most seasons, and similar reports come from Island Glass and others of the more northerly stations. The great gales from W. and S.W. during November and December made all birds scarce at Monach Island, even Eider Ducks being unusually scarce. At Skerryvore birds never struck lanterns in flocks this year, but only in scattered instances. It will thus be seen that the migratory seasons of 1879 and 1881 most closely resemble each other, as regards our Scottish coasts, whilst that of 1880 was more abnormal, owing to the easterly winds prevailing.