Turdidæ.--Thrushes.--In February the only returns are from Bell Rock and Isle of May, between the 3d and 20th; earliest at Isle of May on 3d, one Missel Thrush; N.E., light clear. Other species mentioned are Blackbirds, Redwings (along with Larks and Starlings), at Bell Rock, with S.W. fresh breeze. Great many struck and killed. Two female blackbirds at Isle of May on 15th, and possibly remaining to breed. Mavises on 20th at Isle of May, and some Fieldfares; showers of snow. In March no great movement, and a few records from Pentland Skerries of single or small numbers of Blackbirds, and one Thrush on 10th and 23d. Solitary Redwing on 23d at Isle of May; and numbers of Thrushes at Fidra (XXVIII. B.), flying about all night. _Spring._--In April scattered birds only up to end of the month at Isle of May of Fieldfares, one Redwing (23d), one Ring Ouzel (21st); but on 19th, at Pentland Skerries, is entered the record (which seems one of some importance): "Ring Ouzels and Song Thrushes a great rush; strong S.E. and haze." And on 26th: "A flock of Fieldfares (mod. S.E., haze), birds which are seldom seen here in spring." Also on the 19th at North Ronaldshay, a station not usually sending large spring returns: "A great number of Thrushes were on the island. Stopped two days;" wind S.E., haze. In May, at Isle of May, one record only of a Fieldfare at the light on the 5th. No more till autumn. _In Autumn._--Earliest record of Blackbird at Pentland Skerries on 9th August. Single records at Isle of May of Common Mavis "migrating" on 19th, and of a Missel Thrush on 30th; W.S.W., clear. _Latest_ record, Fieldfares on 20th to 28th November, "a good many;" at Dunnet Head, "seen all day;" and scattered records through November at Pentland Skerries of Thrush and Blackbird. In September also, quite scattered records of single or very small lots of Blackbirds, Ring Ouzels, Fieldfares, and Mavises, from Pentland Skerries, Isle of May, and Fidra. But in October masses and rushes innumerable from the following stations:--Pentland Skerries (Redwings, 4th to 16th). Isle of May (Blackbirds, mostly females, 7th; Fieldfares, "numbers" on 18th, N.E. gale; Blackbirds, all males, on 21st, wind from E. to S.W.; Redwings, rush on 28th, S.E., fresh; also of Fieldfares and Ring Ouzels and Blackbirds). Again, at Pentland Skerries, great numbers of _Turdidæ_ on 29th, of all kinds. Greatest rush at Pentland Skerries of Redwings and Song Thrushes (along with Goldcrests and Chaffinches, Robins, a few Ring Ouzels, and Woodcock); strong S.E. gale and rain. At Bell Rock, Redwings (without other species in any numbers), 22d to 26th October every night in numbers; wind from light W. to E. and N.E. All through October indications, more or less pronounced, at the following stations:--N. Unst, Sumburgh Head, Pentland Skerries, Noss Head, Bell Rock, Isle of May, Fidra. From the above notes the migration of _Turdidæ_ appears to have been unusually compressed and sudden.