Writing again on 21st October, Mr G. says: "I again beg to send you two schedules. Since the 4th we have had a great rush of migrants. The prevailing wind being from the east, as soon as it shifted round to the west birds began to leave; but were back again as soon as the wind shifted to east. I send you wings and feet for identification, and will be much obliged by an early reply if I have named the species correctly."[1] Later he has the note: "Solans ceased going east about the end of September; only a straggler seen now and again during this month (October)." Besides the above, Mr Gilmour has many interesting notes, which, however, come to be more easily worked from the schedules into the text under species. [Footnote 1: Correctly named:--Blackcap and Great Spotted Woodpecker [Recorded _Proc. Roy. Phys. Soc. Edinb._, vol. for 1885-86, pp. 298, 299.--J. A. H.-B.]. Also immature Pied Flycatcher, 7th October.] _Dunnet Head._--David Laidlaw (principal) sends one schedule, in which are the following notes: "On the 23d May a swallow entered Dunnet Established Church during the forenoon service (one of the doors being open), and after flying through the church for about half an hour, made its exit by the same door that it entered by. S.E., fresh breeze, clear." Under date of January 15, 1887, he writes: "For the last month I see a good many Song Thrushes about the fields daily. Starlings and Linnets are to be seen here in large flocks all the year round.[2] No birds struck or lighted on the lantern during the year except the Wren mentioned in schedule. As to sea-birds, the Gulls[3] came to breed about the 1st of March, and left about the latter end of September. The other birds arrived about six weeks later, and took their departure about a month earlier than the Gulls. During the latter end of July, and the months of August and September, almost every minute of the day, Solan Geese pass and re-pass in flocks of two or three up to twenty or thereby." [A day-to-day return of numbers in a schedule devoted to the species might prove valuable to our Committee.--J. A. H.-B.] [Footnote 2: These are probably true Rose-Linnets, which abound in the north of Caithness. The Twite is comparatively rare, at least in summer.--J. A. H.-B.] [Footnote 3: Herring Gulls breed in astonishing numbers all round the coast from Dwarwick Head.--J. A. H.-B. Lesser B. B. Gull is rare.]