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.
CITES: Appendix I Â». Fast Facts. Size: One of the largest woodpecker species is the ivory-billed woodpecker, which was thought to be extinct for the greater part of the 20th century and then rediscovered in 2005. This species measures from 19 to 21 inches in length and weighs from 1 to 1.25 pounds. The smallest woodpecker in North America is the downy woodpecker, which reaches only 6 or 7 inches in length. Lifespan: On average, woodpeckers live from 4-11 years.