Auks
Bill not longer than the head, much compressed, generally very high, in the species approaching the next family rather slender. Nostrils small, linear, basal, and sub-marginal. Head large, broadly ovate, anteriorly narrowed; neck short and thick; body full, compact, ovate, or somewhat elongated. Feet short, rather stout, placed far behind; tibia bare for a short space; tarsus very short, compressed, anteriorly scutellate; toes three, of moderate length, scutellate, webbed. Claws strong, arched, acute. Plumage dense, blended, soft. Wings small, narrow, pointed. Tail very short. Tongue slender, trigonal; oesophagus very wide, within the thorax extremely dilated; stomach rather large, muscular, with the epithelium dense and longitudinally rugous; intestine long and wide; coeca of moderate size. Trachea simple, with a single pair of inferior laryngeal muscles. Egg generally single.
Genus I : Auk
Genus II : Guillemot
Genus III : Puffin
About This Guide
High-resolution images courtesy of the John James Audubon Center at Mill Grove, Audubon, PA, and the Montgomery County, PA, Audubon Collection. Learn more about the John James Audubon Center.
Get Audubon in Your Inbox
Let us send you the latest in bird and conservation news.