BLACK—BLUE. a 
BLUE-BACKED Dove. Macgillivray’s name for the STOCK- 
DOVE. 
BLUE-BACKED Fatcon: The PEREGRINE FALCON. (North 
England.) From the dark blue-grey of the mantle. 
BivuE-BAcKED Maw: The HERRING-GULL. (Orkney and 
Shetland.) Also occurs in Yorkshire as Blue-backed Gull. 
BLUE-BILLED CuRRE: The TUFTED DUCK. (West Coast.) 
BivuE-Bonnet or Biurcar: The BLUE TITMOUSE. The 
former is a Scots and Irish and the latter an English pro- 
vincialname. 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. 
BivuE Darr or Biur 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.” 
BuivuE Dove: The ROCK-DOVE. (North Yorkshire.) 
Buve Dunnock or BLuE Sparrow : The HEDGE-SPARROW. 
From its neck and breast being of a bluish-grey tint. The 
first is a Cheshire name. 
Bivur Guep or BiuE Kirz: The HEN-HARRIER. (Scotland.) 
From the blue-grey plumage of the male. 
Bite 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. . 
Buve Isaac or Biur Jia: 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). 
Buvr Jay: The JAY. (Linlithgow, and at Scarcroft, York- 
shire.) 
BivuEe Maa or Maw: The COMMON GULL. (Shetlands.) Blue 
Maw is also a Scottish Border name for the species. 
