Tree Sparrow, _Passer montanus_.--Flocks of Sparrows[11] were noticed at several stations south of the Humber. At the Outer Dowsing, on Sept. 29th, at noon, and Oct. 13th, 2 p.m., travelling from E. to W. At the Kentish Knock, Oct. 22nd to Nov. 8th, going from S.E. to N.W.; on Nov. 8th two came on board. At the Nore, Oct. 27th and Nov. 15th, on latter day mixed with Larks. At the Goodwin, Oct. 6th and 22nd, passing to W.N.W. At the Gull-stream, Oct 16th, large numbers of Sparrows and Linnets going W.; also on the 24th, 3.30 p.m., flocks 200 yards apart. At the East-side, Nov. 8th, 9 a.m., a flock going E. to W. At the South-sand Head, Oct. 8th, "French Sparrows"; 16th, the same, some settled on board. Time of migration Sept. 29th to Nov. 15th--forty-eight days. During September and October Tree Sparrows usually arrive in North-East Lincolnshire in flocks containing many hundreds. This year has been quite an exceptional one, and only a few stragglers have been seen. I suspect the persistence of north-westerly winds in the autumn has driven these and the great body of our immigrants much further southward than is usual. The returns indeed show this to be the case. [Footnote 11: It is not improbable that in some of the returns the entries may refer to the Common Sparrow. We know, however, that Passer montanus is such a constant and regular migrant to our east coast in the autumn that in the majority of cases it will refer to this species.--_J. C._] House Sparrow, _Passer domesticus_.--Only once mentioned, at the Corton, Sept. 28th, 7.50 a.m., large flock going west, males and females. As the female of the preceding is undistinguishable from the male, this entry undoubtedly refers to the Common Sparrow. We know that the House Sparrow is a migrant across Heligoland,[12] and my own observations on the Lincolnshire coast tend to the same conclusion. [Footnote 12: See a letter by Mr. Gätke in 'The Times,' March 31st, 1877, on the "Migration of Sparrows."]