BLACK BLUE. 27 



BLUE-BACKED DOVE. Macgillivrav's name for the STOCK- 

 DOVE. 



BLUE-BACKED FALCON : The PEREGRINE FALCON. (North 

 England.) From the dark blue-grey of the mantle. 



BLUE-BACKED MAW: The HERRING-GULL. (Orkney and 

 Shetland.) Also occurs in Yorkshire as Blue-backed Gull. 



BLUE-BILLED CURRE : The TUFTED DUCK. (West Coast.) 



BLUE-BONNET or BLUECAP : The BLUE TITMOUSE. The 

 former is a Scots and Irish and the latter an English pro- 

 vincial name. Nelson and Clarke, however, say Blue Bonnet 

 is used in the West Riding of Yorkshire, but Bluecap else- 

 where in the county. 



BLUE-BREAST : The NORWEGIAN BLUETHROAT. 



BLUE DARR or BLUE DAW : The BLACK TERN. (Norfolk.) 

 Johns says Darr is a corruption of Dorr-hawk, a name for 

 the NIGHTJAR, " which it resembles in its mode of flight 

 and also in its food." 



BLUE DOVE : The ROCK-DOVE. (North Yorkshire.) 



BLUE DUNNOCK or BLUE SPARROW : The HEDGE-SPARROW. 

 * From its neck and breast being of a bluish-grey tint. The 

 first is a Cheshire name. 



BLUE GLED or BLUE KITE : The HEN-HARRIER, (Scotland.) 

 From the blue -grey plumage of the male. 



BLUE HAWK. A common name for the SPARROW-HAWK ; 

 also the MERLIN (North Yorkshire), the HEN-HARRIER 

 (Bewick) and the PEREGRINE FALCON (Macgillivray). 



BLUE-HEADED QUAKETAIL : The BLUE-HEADED WAGTAIL. 

 (Macgillivray.) Macgillivray separated the " Yellow Wag- 

 tails " under the name of " Quaketails " from the Black-and- 

 White group or " Wagtails." 



BLUE-HEADED WAGTAIL [No. 74]. The name occurs in 

 Jenyns (1835). It is sometimes called the Blue -headed 

 Yellow Wagtail, and erroneously the Grey-headed Wagtail, 

 the latter being a distinct form. 



BLUE ISAAC or BLUE JIG: The HEDGE-SPARROW. (Pro- 

 vincial.) Isaac is probably a corruption of Heges-sugge (see 

 under " Segge "). 



BLUE JACKET : MONTAGU'S HARRIER ; from the blue-grey 

 of its mantle (or jacket). 



BLUE JAY : The JAY. (Linlithgow, and at Scarcroft, York- 

 shire.) 



BLUE MAA or MAW : The COMMON GULL. (Shetlands.) Blue 

 Maw is also a Scottish Border name for the species. 



