act as the functional units of the respiratory system by passing oxygen into the body and carbon dioxide out of the body. Finally, the muscles of respiration, including the diaphragm and intercostal muscles, work together to act as a pump, pushing air into and out of the lungs during breathing.
The Ivory-billed Woodpecker (Campephilus principalis) is an extremely rare member of the woodpecker family, Picidae. It is officially listed as an endangered species, but by the end of the 20th century had widely been considered extinct until it was apparently sighted along the Cache River in Arkansas in 2004 and 2005.
Red-Bellied Woodpecker (Melanerpes carolinus): The red-bellied woodpecker is a medium-sized woodpecker approximately nine to 10.5 inches in length. The two field marks used to identify red-bellied woodpeckers are the black and white striped back and the red patch on the head.Females have only a red patch on the nape of the neck while males have a red cap that extends down the neck. The underside may have a blush of red feathers.ale hairy woodpeckers can be distinguished from females by the red patch on the back of their heads. Yellow-Bellied Sapsucker (Sphyrapicus varius): The yellow-bellied sapsucker is a medium-sized woodpecker approximately eight to nine inches in length.