A—Primary Quills.
B—Secondary Quills.
C—Spurious Wing.
D—Wing Coverts.
E—Tertiary Quills.
F—Throat.
G—Jugulum.
H—Beak—Upper and Lower Mandible.
I—Culmen of Upper Mandible.
J—Cere.
K—Commissure.
L—Frons, or Forehead.
M—Occipital Feathers.
N—Scapular Feathers.
O—Back.
P—Upper Tail Coverts.
Q—Rump.
R—Shows position of Under Tail Coverts.
S—Abdomen.
T—Tarsus.