- ABDOMINAL: Abdominal region, between the thorax and the pelvis
- ANTEBRACHIUM: Forearm area, supported by the radius and ulna
- AURICULAR FEATHERS: Feathers cover the ear opening
- AXILLARY: Armpit area, called the axilla
- BRACHIAL: Upper arm, supported by the humerus
- BUCCAL: Cheek area, usually the lateral walls of the oral cavity
- CARPAL: Wrist or wrist area
- CELIAC: Abdomen or stomach
- CERVICAL: Structures of the neck
- COMMISSURE: The angle at which the maxilla and mandible meet
- COSTAL: Ribs or rib cage
- CRANIAL / CEPHALIC: Head
- CRURAL: Leg, as in crural feathering
- DIGITAL: Finger remnants
- DORSUM: The back or entire dorsal surface
- GAPE: Gap between the open maxilla and mandible when the bill is opened wide
- MALAR REGION: Mustache feathers
- MAXILLA: Upper bill
- NAPE REGION: Dorsal surface of the neck from the occipital ridge of the skull posterior to the base of the neck and beginning of the thoracic vertebrae
- NARIAL FEATHERS: Long feathers at the base of the maxilla and extending anteriorly to partially cover the nostrils
- OCCIPITAL: Eye sockets
- PECTORAL: Ventral chest and breast regions between the sternum and the shoulder
- RICTAL BRISTLES: Bristlelike feathers around the corner of the mouth
- SACRAL: The region between the crests of the pelvis, the fused bones of the synsacrum
- SCAPULARS: Feathers that overlie the scapula bone at the base of the dorsal wing, also called the HUMERAL REGION
- STERNAL: Sternum
- TARSAL: The lower leg that contains the tarsometatarsus
- UROPYGIUM: Region that overlies the pelvic bones, also called the RUMP or LOWER BACK; lateral boundaries are the flanks along the side of the body just anterior to the tail
- VERTEBRAL: The vertebrae or the entire spinal column
Ornithology