As a few technical and scientific words have unavoid- 
ably been introduced into this work, we subjoin the 
following glossary : 
Mandibles . The two parts which compose the bill. 
Cere. A colored membrane investing the base of the upper mandi- 
ble : as in Hawks, and a few other birds. 
Capistrum. The sides of the head immediately behind the bill. 
Front. The forehead, or fore part of the head. 
Lores. A naked line leading from the bill to the eyes. 
Orbit. A circle round the eye-brows. 
Inter scapular . The region between the wings, and the back. 
Primaries. The external quills of the wing, often about 10 in num- 
ber. 
Secondaries. The next quills to the primaries, being usually about 
10 to 18. 
Tertials. The innermost quills, being from 3 to 5 in number. 
Alula. The spurious or bastard winglet, of 4 or 5 small feathers, sit- 
uated at the outer edge of the shoulder of the closed wing. 
Scapulars. Long feathers arising from near the junction of the wing 
with the body above, and lying over each other. 
Alar. Of the wings : a term employed in speaking of the stretch of 
the wing. 
Tarsus. The leg bone, joining the commencement of the foot. 
LIST OF THE WOOD CUTS. 
A vignette at the beginning and close of the Intro- 
duction, 
. Boicen. 
Page. 
The Condor, 
Hartwell , 
35 
Common Falcon, 
53 
Washington Eagle, 
. Boicen , 
67 
Bald Eagle, 
72 
Fish Hawk, 
. Hall , 
78 
Swallow-tailed Hawk, 
95 
Hawk Owl, 
. Bowen , 
115 
Mottled Owl, 
120 
Great Horned Owl, , 
. Bowen , 
124 
Long-eared Owl, 
131 
