FOR CAGES AND AVIARIES. 193 



a well known bird ; it is the type of the sub-family 

 CygnincB, of which several other species are occasionally 

 included in the avi-fauna of the British Isles, but without 

 any warrant save the very rare occurrence on our shores 

 of some wandering specimen. 



THE SWIFT. See under Swallow. 



THE TASSEL. See under Hawks. 



THE TAWNY OWL. See under Owls. 



THE TAWNY PIPIT. See under Pipits. 



THE TEAL. See under Ducks. 



THE TEASER. See Skua. 



THE TERCEL. See under Hawks. 



THE TERNS. 



The Arctic Tern. 



A winter visitor, occurring in considerable numbers in 

 many places in the three Kingdoms. Morris supposes that 

 "the name of Tern is derived from the habit the bird has 

 of turning in the remarkable manner it does when pouncing 

 on its prey," which consists of small fish, as well as water 



