90 REPORT ON THE MIGRATION OF BIRDS. 



Black-headed Gull, 9 am., N.W. wind, light breeze, rain, " not 

 often seen here;" July 17th, "Boatswain Bu-d," 10 p.m., first 

 seen, also Kittiwakes ; July 21st to 27th, " Boatswain Gulls " 

 seen ; Aug. 2nd, great numbers of ditto seen. At Corsewall, 

 Nov. 1st, one Kittiwake seen, 9.45 p.m. ; fresh E. breeze. At 

 Stornowav, July 21st, a flock, apparently migrating, fl3'ing N., 

 9 p.m., light N.E. wind. 



Terns. — At Monach, Aug. loth to 20th, great flocks were 

 congregating previous to departure ; winds light, clear ; and by 

 2oth all were gone, except a few detained by late young ones 

 (see spring migration, under Tern). They are also reported to 

 have left the neighbourhood of Stornoway lighthouse by Aug. 

 15th. On Aug. 26th, sixteen *' Sea Swallows" arrived at 

 Bahama light-vessel, at 2.20 p.m., in hazy weather; wind light 

 S.E. by E. 



Gannet, Suhi hassana. — In the same way I give the data as 

 shown in the schedules. At Cape Wrath, April 14th, 800 to 900 

 flying E., for breeding at Souliskerry, from 7 a.m. to 8 p.m. ; 

 wind E., clear. At Douglas Head, April 18th, one, light N.E. 

 wind, clear ; July 14th to Aug. 28th, 60 to 900 daily, flying W., 

 7 a.m. to 9 p.m. Xote. — I am informed by Mr. Gray that Mr. 

 Anderson traced the Gannet as far south as the latitude of South 

 Spain, where one da}^ the ship passed through acres of them ; 

 they seemed dead beat, as if after a toilsome flight during a 

 succession of autumn gales. At Ehu Stoir, July 1st to Aug. 31st, 

 large flocks going N. daily along the coast, largest numbers 

 about end of July ; generally passing between 7 and 9 p.m. ; none 

 seen going south. At Butt of Lewis, April 13th, three Solan Geese 

 seen, 9 a.m., the first seen; May 20th to Sept. 15th, increased daily 

 till May 20th, and then on till middle of September, it would be 

 impossible to count them from dawn till dusk : they passed in 

 long strings of fifty to sixty in a flock at not more than a quarter 

 of hour's interval between the flocks ; they all flew west. A 

 number (about one-fifth of the whole) fly east, and take 

 no notice of the others in theii* flight ; these are single birds : 

 not one seen after Oct. 15th. At Island Ghlais, July 12th, 150 

 Solan Geese "^jiug S. and N.," 7 a.m. to 8 p.m., light airs, W., 

 clear; July 13th, 200 '' flying S. and N.," 7 a.m. to 7 p.m., fresh 

 X. wind; July 15th to 31st, 1600 to 2000 flying both X. and S., 



