Hummingbirds. 
427. Blue-throated Hummingbird (Caligena clem- 
ence). L. 5.2. A white stripe behind, and a smaller 
one before eye. Ad. g’. Throat blue; belly grayish; 
back green; tail blue-black, outer feathers broadly 
white tipped. 4d. 9. Similar but throat dusky gray. 
Range.- Southern Mexico north, in mountains to mountains of 
southwestern New Mexico and southern Arizona; winters south of 
United States. 
438. Reiffer Hummingbird (Amazilis tzacatl). L. 
4.1. Ads. Above, throat and breast shining green; 
belly grayzsb; tail square, rusty brown, xarrowly mar- 
gined with coppery. Yuxg. Similar but more rusty 
above. 
Range.—Northern South America; north, rarely, to Lower Rio 
Grande Valley, Texas. 
439. Buff-bellied Hummingbird (Amagilis cerctnt- 
ventris chalconota). Similar to No. 438, but belly rusty 
gray, tailforked and broadly margined with coppery 
green. 
Range.—Central America, north, in spring, to Lower Rio Grande 
Valley, Texas. : 
440.1. White-eared Hummingbird (Baszdinna leu- 
cots). L. 3.7. A white line behind eye. Ad. oi. 
Chin, forehead and cheeks blue, throat and breast 
green, tail blackish bronzy green. Ad. 9. Crown 
rusty, back bronzy green, below gray spotted with 
eee outer tail-feathers tipped with gray. Yng. <. 
imilar. 
Range.—Nicaraugua north, in spring, through mountains to south- 
erm Arizona. 
441. Broad-billed Hummingbird (Jache latirostris). 
L.4. Ad. go’. Above green; below darker; throat 
purplish blue; tail darker. 4d. 9. Below gray; outer 
tail-feathers green at base,then bluish black tipped 
with gray. Yung. G'. Similar to Ad. @, but tail blue 
Dae with faint gray tips; throat with metallic green 
eathers. 
Range.—Southern Mexico; breeds north through mountains to 
southern Arizona and southwestern New Mexico. 
* 428. Ruby-throated Hummingbird (Trochilus col- 
ubris). L. 3.5; W.1.5. Ad. og’. Throat ruby, chin 
blackish; tail forked, the feathers pointed. Ad. @. 
Throat grayish, tail-feathers rounded, three outer ones 
tipped with white. Yug. gf’. Like Y but throat with 
dusky spots. (See next page.) 
Range.— Eastern North America, west to about Long. 100°; breeds 
from Florida and eastern Mexico, north to Labrador and Hudson Bay 
region; winters from southern Florida to Central America. 
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