BLUE-THROATED HUMMINGBIRD. 
427. Cyanolcemus clemenciae. 5 inches. 
This bird is a trifle larger than the preceding, and, as the 
name implies, it has an iridescent bright blue throat, with a 
streak of white extending from the bill to back of the eye, the 
upper parts of a uniform greenish color, under parts are a 
greenish gray. Tail dark with outer tail feathers broadly 
tipped with white. n n , 
Nest.—Is built similar to above, but placed at lower eleva¬ 
tions, at times very near the ground. They are to be found 
only in Arizona and the southern borders of the United States. 
BLACK-CHINNED HUMMINGBIRD. 
429. Archilochus alexandri. 3% inches. 
This is similar in size and appearance to the Ruby- 
Throat,’’ but has the chin and upper throat black, the rest ot 
the throat being violet or amethyst, as seen in different lig ts. 
It is a very common bird in the southern part of its range, it 
nests low, rarely above ten feet from the ground. Nest made 
of plant fiber, not covered with lichens, but resembles a small 
piece of sponge. 
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