128 REPORT ON THE MIGRATION OF BIRDS. 



to January, and two to four Black-backed Gulls occasionally. 

 Kittiwakes fishing in shelter of rock, Nov. 20th and Dec. 11th ; 

 wind strong gale, N.W. and W. 



Dursey Island. — Large flock of Gulls noted on April 7th, 

 25th, 27th, and May 5th. A few on May 27tli, and at intervals 

 to July. Large flocks on Aug. 25th and Sept. 18th, going W. 

 Four Royal Gulls on Dec. 22nd. 



Skua Gull. 



Galley Head. — Jan. 20th, flocks of five to seven Skua Gulls 

 going W. 



Coninghcg Lir/ht-ship, — Oct. 28th, two Skuas chasing Gulls. 



Tiiskar Rock. — June 7th, flocks alighted on rock four 

 mornings in succession at same hour. Aug. 20th to 22nd, Skua 

 Gulls in hundreds. 



Lough Sivilly. — June 22nd, one "Boatswain Skua Gull." 



Valentia, — Nov. 22nd, four Skua Gulls. 



Manx Shearwater. 



Barrels Rock Light-sliip. — July 6th, ''Mackerel Cocks" flying 

 in different directions. 



Ratldin Island. — April 12th, Shearwater began to arrive; 

 22nd, more arrived. 



Tearaght. — Jan. 30th, " Mackerel Cock " in great numbers 



diving round rock ; observed a fortnight previous to this date. 



Feb. 25th, " Mackerel Cock " (believed to be) left, always diving, 



and did not come on rock. April 5th, note of the Shearwater 



first heard. Nov. 21st, " Mackerel Cock " diving about the rock 



pretty plentifully. Not certain about this bird. The Manx 



Shearwater left about Aug. 1st. It was heard frequently during 



the summer, and always on very dark calm nights. The sounds, 



being frequent and distinct, were, very impressive. When the 



moon would rise, or it would clear, a single note was not to be 



heard. 



Stormy Petrel. 



Coninghcg Light-ship. — Oct. 9th, five* Mother Carey's 

 Chickens caught on deck, 5 a.m. ; wind light, hazy. Oct. 

 15th, two Stormy Petrels about ship ; 28th, two caught on deck, 

 10.30 p.m. 



Arklow South Light-ship. — April '24th, one; wind light E. 



