348 NORTHERN ZOOLOGY.
Younger females have the brownish^o'range and yellowish-brown bars more conspicuous >over
the whole plumage above and below, but particularly-on the neck, and the black and white
less pure and in smaller quantity. The tail also more mottled ; the terminal bar narrower.
F orm.__Bill smaller than that of T. umbellus. No distinct crest, although the feathers of
the crown are capable of . erection. Third and fourth quills equal and longest. Tail, of
sixteen feathers, considerably rounded. Tarsus thickly feathered, particularly behind, where
the feathers are long and hair-like. Some tufts of feathers spring from the short webs that
connect the anterior toes. Toes naked and pectinated.
Dimensions. Inch Lin. Inch. Lin. Inch. Lin.
, total 17 0 Length of bill to rictus . 0 11 Length of middle nail . 0 6
of tail • ■ . . 5 6 „ of tarsus . . 1 5 „ o f hind toe 0
of wing
. 7
4J
of bill above
• 0
7
„ of middle toe . . 1 5 „ o f its nail . 0 3*
The old females are of yearly equal dimensions.-—R.
Female from Great Bear Lake.
• [125.] 4. T etrao F ranklinii. (Dougl.) Rocky Mountain Spotted Grouse.
Tetrao Franklinii. D o uglas, Linn. Trans., xvi., p. 139, sp . 4.
Tetrao Canadensis, v a r. B o n a p . Orn., iii., p. 4 7 , p i. 20 ; male.
P late l x i. M a l e.
There is such a close resemblance between this and the common Canadian
Grouse (T . Canadensis), that the Prince of Musignano considers it only as a
variety; and this opinion is entertained also by Mr. Drummond, a very acute
practical observer: the latter had ample opportunities of studying the manners