168 THE BIRDS OF CUMBERLAND. 



Tern on Walney island, " almost ready to fly," on 

 May 21st ; but a reference to the Zoologist, 1878, 

 p. 120, shows that Mr. Durnford refered to the 

 21st of June, and not to the month of May; the 

 latter would have been an extraordinary date. 



Genus HYDROCHELIDON. 



H. Nigra. Black Tern. 



The Black Tern is a rare casual visitant, on 

 spring and autumn migration, following the western 

 coastline and trending eastward of the Sol way. 

 Our latest notes refer to two adults, observed on 

 the Solway on October 20th, 1884, and to another 

 which haunted a '* runner" near Aiglegill, on and 

 after April 27th, 1885. Mr. T. Armstrong recorded 

 in the Naturalist (Vol VII, 1857, p. 251), that he 

 took a clutch of the eggs of this species on Solway 

 flow in 1855, but he appears to have parted with 

 them. The locality being a heather-covered moss, 

 with sedgy pools interspersed, is as likely as any 

 in the county, but there are no other records of 

 the presence of the Black Tern in full summer. 

 Far inland, a Black Tern was shot some years since 

 at Talkin Tarn, probably on its way to or from the 

 east coast. 



Sub-Family LARIN^. 

 Genus RISSA. 



B. Tridactyla. Kittiwake. 



The Kittiwake is a fairly numerous winter 

 visitant, immature birds occurring constantly in the 



