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.
The great spotted woodpecker is 23â26 centimetres (9.1â10.2 in) long, with a 38â44 centimetres (15â17 in) wingspan. Weight: 70-98 g. The upperparts are glossy black, with white on the sides of the face and neck.mmature birds resemble the middle spotted woodpecker (D. medius), the male white-backed woodpecker, the immature Syrian and white-winged woodpeckers, and male or immature lesser spotted woodpeckers (Picoides minor, formerly also in Dendrocopos).