16 REPORT ON THE MIGRATION OF BIRDS. 



time with Wbeatears, Oystercatchers, Wagtails, and rock-birds. 

 At Bell Rock, Aug. 28th, about thirty old and young were seen 

 feeding ; and on the 29tli these all left. At Sumburgh Head, 

 Sept. 8th, a number flying about and crying at 9 a.m. ; wind W., 

 light and haze. At Auskerry, Oct. 1st, four flew round for a 

 little about 1 a.m. ; wind light E., rain. 



Note. — Mr. J. T. Garriock, to whom I am obliged for 

 a supplementary schedule from Lerwick, recorded in ' The 

 Zoologist ' for 1880 the arrival of Terns, apparently from the 

 north, on May 22nd, when a pair was fii;st noticed. In a sub- 

 sequent letter to me, Mr. Garriock confirms his observation on 

 the dii'ection of their flight. 



Petrel, Thalassidroma pelagica. — Occasionally strikes the 

 lantern during the season at North Unst, but no dates given. 

 At Whalsey, Aug. 16th, one caught at 1 a.m. ; wind light N.W., 

 haze. At Sumburgh Head, Aug. 3rd, three struck at 11 p.m.; 

 wind N.N.W., dull, and sultry; and on the 6th, one struck at 

 midnight ; wind S., and haze. At Auskerry, Aug. 16th, one 

 killed at 11.20 p.m. ; light S. breeze, fog, and haze. One 

 struck at Auskerry, Sept. 13th, at 3 a.m. ; wind strong S., and 

 haze. 



Gannet, Sida hassana. — At Sumburgh Head, July 20th 

 (earliest date), great numbers, adult and young, flying in all 

 directions, feeding on herrings. At Pentland Skerries, July 19th, 

 30—40, flying E., wind N.E., 9 a.m. to 5 p.m.; 20th, 50, flying 

 E., wind fresh N., 9 a.m. to 5 p.m. ; 21st, 60, flying E., wind 

 light N.E., clear, 9 a.m. to 5 p.m.; 22nd, 25, flying E., wind 

 light N.E. aii-s, 9 a.m. to 5 p.m. ; 23rd, 25 — 30, flying E., wind 

 E., 10 a.m. to 4 p.m. ; 24th, 40, flying E., wind S.E., 9 a.m. to 

 7 p.m., fog, haze; 26th, 60, flying E., wind mod. E., 9 a.m. to* 

 7 p.m., fog, haze; Aug. 4th, continuous flights, wind light E., 

 9 a.m. to 7 p.m., fog, haze ; 5th, continuous flights, wind moderate 

 W., 4.30 a.m. to 8.30 p.m. 



Note. — Solan Geese were observed daily in flocks going E., 

 from July 19th to middle of Sept. ; and going W. on Aug. 19th, 

 20th, and 25th. About the middle of Sept. young appeared 

 amongst them. This note summarises to a great extent the 

 above data. At Tarbat Ness, Oct. 18th, 19th, and 20th, great 

 numbers flying N., wind S., 8 a.m. to 4 p.m. Since the return 

 of the schedules Mr. Jack has written to me that — " On the 5th 



