HlIlUNDO. 
BIRDS. PASSERES. 
61 
against the rafters, composed of clay on the outside, with grass and feathers 
within, and open above. Eggs from 4 to 6 in number, white, with red specks. 
Frequently brings out two broods in the season. This species visits us ear- 
lier than its congeners. Drinks and washes on the wing. Albinoes sometimes 
occur. 
26. H. urbica. The Martin.— Above black ; beneath and 
rump white. 
H. agrestis. Will. Orn. 155. — House-Martin, White, Phil. Trans. 1774, 
196. Penn. Brit. Zool. i. 401. — H. urb. Temm. Orn. i. 428. — W, Mar- 
thin Penbwl. 
Length 6, breadth 10| inches. Bill black ; irides hazel; claws white ; legs 
and toes closely covered with white down. The black of the head and back 
glossed with purple, female has the white of the throat inclining to 
dusky. Nest of similar materials to the rustica, but in this it is covered at 
top, with a lateral entrance. It is placed against the eaves of houses or the 
sheltered corners of windows. Eggs four or five ; white. In this species the 
tail and wings are shorter than the swallow, and its motions less quick. Al- 
binoes sometimes occur. 
36. H. 7'iparia. Sand-Martin. — Plumage above, and the 
breast, mouse coloured ; the rest white. 
Will. Orn. 156. Sihh. Scot. 17. White, Phil. Trans. 1775, 272. Penn. 
Brit. Zool. i. 402. Temm., Orn. i. 429. — E, Shore Bird ; W, Gennol-y- 
Glennydd ; G, Gobhlan gainbhich. 
Length 5| inches. BiU and legs dusky ; irides hazel. Tarsi with a few 
small feathers at the insertion of the hind toe. The /mafe has duller colours. 
Nest at the extremity of horizontal holes, in sand-banks, 2 or 3 feet in length, 
consisting of grass and feathers. Eggs from 4 to 6, of a white colour. The 
young have the feathers bordered with rust colour — This species in flight is 
irregular, making sudden jerks. 
Gen. XX. CYPSELUS. Swift.— Tail forked; of 10 fea- 
thers. All the toes pointing forward. The first quill a 
little shorter than the second. Nostrils near the ridge of 
the bill, exposed, lengthened, with elevated margins. 
37. C. Apus. Common Swift. — Plumage black, with a white 
chin. 
Hirundo Apus, Will. Orn. 156. Sihb. Scot. 17* White, Phil. Trans. 
1775 , 264. Penn. Brit. Zoo\. i. 403. — C. murarius, Temm. i, 434.—-^, 
Black Martin, Screech ; W, Marthin du. 
Length 8, breadth 18 inches; v/eight above an ounce. Bill, legs, and toes, 
black ; irides dark hazeL Breeds in holes in towers and steeples. Nest of 
grass and feathers. Eggs 2, of a white colour. The young have the feathers 
at the base of the bill white ; the quills, their covers and tail-feathers bordered 
with white. Copulate on wing. Breed only once in the season. Depart early. 
Gen. XXI. CAPRIMULGUS. Goatsucker.— Tail round- 
ed, of 10 feathers. Three toes in front, united at the base 
to the first joint ; hind-toe capable of being brought for- 
