NORTH AMERICAN BIRDS. 
sides, and flanks also rufous. Adult females with 
all the tail-feathers rufous for basal half (but green 
on middle pair running along median portion 
nearly to base), the three outer feathers broadly 
tipped with white and marked by a subterminal 
broad band of blackish; belly white, but sides, 
flanks, and under tail-coverts light rufous. Young 
males: Similar to adult female, but feathers of upper 
parts bordered with pale rusty, the rump show- 
ing much rufous, and throat usually with one or 
more feathers (new moult) of bright metallic red. 
Young females: Similar to young males, but rump 
entirely green, and throat showing only dull green- 
ish specks. 
ht. Adult male: Tail-feathers broad, the second (from 
middle) with a deep notch near end of inner 
web, and outer web sinuated near tip; outer 
feather more than .10 broad; upper parts 
rufous, the crown (and, rarely, the back) . 
glossed with dull metallic green; length about 
3.25-3.70, wing 1.50-1.60, tail 1.30-1.35, cul- 
men .60. Adult female: Outer tail-feather 
more than .10 wide; length about 3.50-3.90, 
wing 1.75-1.80, tail 1.25-1.30, culmen .65-.70. 
£iggs 50 x 33. Hab. Western North Amer- 
ica, north beyond northern border of United 
States (to or beyond Sitka on Pacific coast), 
east to Rocky Mountains, south over table- 
lands of Mexico........... 433. T. rufus GmMeEn. 
Rufous Hummingbird. 
i. Adult male: Tail-feathers narrow, the second 
(from middle) without notch or sinuation; 
outer feather much less than .10 broad; whole 
back, as well as crown, bright metallic green; 
length about 3.25-3.30, wing 1.50-1.55, tail 
1.10-1.20, exposed culmen .60-.65. Adult fe- 
male: Outer tail-feather not more than .10 
wide; length about 3.40, wing 1.65-1.70, tail 
1.05-1.15, exposed culmen .68-.70. Eggs .50 
< 33. Hab. Coast district of California, 
north to British Columbia, south to Arizona. 
434, T. alleni (Hznsu.). 
° Allen’s Hummingbird. 
g’. Adult male with top of head brilliant metallic red, 
like gorget, the middle tail-feathers green bordered 
