248 BIRDS OF LANCASHIRE. 



the sound produced by running a sharp stick across a 

 comb. The nests in structure were very similar to those 

 of the Black-headed Gulls, being composed entirely of 

 grass, and placed quite close to each other on the 

 ground, the only difference being that the Gulls' nests 

 were placed on somewhat level ground, whereas those of 

 the Sandwich Tern were situate on the side of a sand- 

 hill among long thin grass. Standing still for a minute 

 I counted seventeen nests, all close to each other, all 



containing eggs, and the majority having three 



the birds were on their nests between 6 and 7 a.m." 



GENUS HYDEOCHELIDON. 



BLACK TEEN. 



Hydrochelidon nigra (Linmeus). 



A rare visitor, occurring on migration in spring and 

 autumn. It is seen as frequently inland as on the coast, 

 and Mr. Pi. Davenport tells me that he has four young 

 birds which were shot September 4, 1878, on the Bury 

 reservoir. Mr. H. Miller says that he has seen it flying 

 about Morecambe Bay up to the end of May. 



SUBFAMILY LAKIN.E.— GENUS* RISSA. 



KITTIWAKE. 

 EissA TRiDACTYLA (Linnffius). 



Like the other rock-breeding Gulls the Kittiwake does 

 not nest in the county, although it occurs the whole 

 year round, and in May is common in Morecambe Bay. 



