492 SKETCHES OF EUROPEAN ORNITHOLOGY. 
Nuttall. Flight, exceedingly smooth and graceful. Nest: formed, 
in the summit of lofty oak or pine, of sticks, with moss and grass, 
and lined with feathers. Eggs: 4—6, greenish-white, irregularly 
blotched with dark-brown at larger end. Food: lizards, snakes, 
insects and their larve. Fig. an adult, superbly executed. 
PrLatTe XXIII. Audouin’s Gull,—Zarus Audouinit,—la Mouette 
d’Audouin, Fv. A supposed native of northern and western coasts 
of Africa. Occurs in Mediterranean. Distinguished from the species 
of genus, Xema, by situation of nostrils, and absence of black head 
in Summer. J/g. an adult male, in summer-plumage. 
Piate XXIV. Vinous Grosbeak,—Pyrrhula githaginea, Temm., 
—le Bouvreuil githagine, Fr. A native of northern and central 
Africa, Nubia, and Syria; occasionally passing into South Europe, 
and the Grecian Islands. Provisionally placed in Erythrospiza, by 
Gould. Fg. an adult male, in his rich rosy colouring. Female 
said to be of an uniform light-brown, faintly clouded with rosy hue ; 
and under-surface, and wings, clear isabella-brown. 
Pirate XXYV. Bulwer’s Petrel,— Thalassidroma—FProcellaria— 
Bulverii,—an inhabitant of Madeira and adjacent isles. Admitted 
as a British bird on the evidence of the fact of one individual having 
been found dead on banks of Ure, near Tanfield, Yorkshire. Distin- 
guished by cuneated figure of tail, and larger size, from all other spe- 
cies of the genus. Fig. an adult. 
Pirate XXVI. Terek Godwit,—ZLimosa Terek,—la Barge terek, 
Fr. An occasional, but rare, visitant of the European continent. 
More nearly allied to Tringa, than, although provisionally assigned 
to, Limosa. Fig. an adult, in its pale-brown winter-plumage ; which 
gives place, in Spring and Summer, to a mottled and spotted garb, 
particularly on the upper surface where the larger markings assume a 
lanceolate figure. 
Prate XXVII. Hybrid Grous,—TZetrao hybridus vel medius,— 
le Tétras Rakhelhan, Fr. Probably not a distinct species ; but the 
hybrid progeny of the Cock of the Woods and Black Grous. Found 
~ only in countries, such as Norway and Sweden, which are inhabited 
by both birds. Would not a careful examination of the sexual 
organs serve, at once, to decide this controverted point? Fig. an 
adult bird. 
Pirate XXVIII. Pectoral Sandpiper,—Tringa pectoralis,—le 
Bécasseau pectorale, /’r. of this bird, an inhabitant of North America, 
one specimen only has yet been killed, or, we believe, seen, in Britain. 
An account of this interesting occurrence has been given by Mr. Hoy, 
Reed 
