102 OKNITHOLOGISTS' COMPENDIUM, 
Pop'py Red, n. A very intense red color, intermediate between ver. 
milion and carmine. (Bourgeois's " laque ponceau.") (Plate VII. 
fig. 9.) 
Posterior (Upper or Lower) Parts, n. The hinder half of a bird, above 
or below. 
Poste'rior Toe, n. In most birds, the hallux, or hind toe. In some, 
however, one of the " anterior " toes is directed backward, and also 
becomes a posterior, or hind, toe. 
Postoc'ular (L. postocuVaris), ( a " ^ ck ,° f ' or . P osterior to > the e y e - 
Postor'bital (L. postor'bitalis), \ ^^j** 18 m ° St ^ (Pkte XIL 
Pow'der-down Feath'ers, n. Peculiar, imperfect feathers, which grow 
in matted patches, usually on the interspaces between the true 
feather-tracts ; characterized by a greasy texture and scurfy exfolia- 
tion. They are particularly characteristic of the Heron tribe (Ardeidce), 
but are found in other groups also. 
Prseco'ces (L.), n. A more or less artificial group of birds, whose young 
run about and feed themselves immediately after emerging from the 
egg. The group is composed of the orders Gallinece, Limicolce, Alec- 
lorides, Anseres, Pygopodes, and Struthiones. 
Praeco'cial, a. Having the nature of, or pertaining to, the Prcecoces. 
Pressiros'tral, a. Pertaining to the Pressirostres. 
Pressiros'tres (L.), n. The systematic name of a Cuvierian artificial 
group of grallatorial birds with hard and compressed bill, comprising 
the Plovers, Cranes, etc. 
Pri'mary (L. rem'iges prima' rice) , n. Any one of the quill- feathers of the 
"hand-wing," usually nine to eleven in number. Used chiefly in the 
plural, as distinguished from the secondaries, or those remiges which 
grow upon the forearm. (Plate XL) 
Primary Cov'erts (L. tec' trices prima' rice), n. The series of stiff feathers, 
usually corresponding with the primaries in their graduation, which 
overlie the basal portion of the latter. (Plate XL) 
Prim'rose Yellow (L. primula' ceo- fla'vus), n. A very delicate pale 
yellow, of a more creamy tint than sulphur-yellow. (Pale cadmium + 
white.) (Plate VI. fig. 13.) 
(L.), n. A name given by Illiger to the Struthiones. 
Protractile, ) a. Capable of being thrust forward or elongated, as the 
Protru'sile, \ tongue of a Woodpecker or a Humming-bird. 
Prout's Brown n. A medium brown color, or the typical brown, com- 
posed of equal proportions of green and red. (Madder carmine + 
vermilion + pale cadmium -f- Italian ultramarine ; or, Winsor & 
Newton's "Prout's brown.") (Plate III. fig. 11.) 
Prune Pur'ple, n. A dark reddish-purple color, darker and duller than 
dahlia purple. (Purple madder + violet madder.) (Plate VIII. 
fig. 1.) 
Proce'res 
Proce'ri, 
