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.
Also in second-growth and fragmented woodlots, as long as some large trees are present. A big, dashing bird with a flaming crest, the largest woodpecker in North America (except the Ivory-bill, which is almost certainly extinct). Excavating deep into rotten wood to get at the nests of carpenter ants, the Pileated leaves characteristic rectangular holes in dead trees.