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.
Welcome to the Oregon Birding Association. Guidelines for Viewing Greater Sage-grouse Leks in Oregon. Endangered Species Act Report 2016. Overall, 70 percent of all ESA-listed U.S. birds are stable, on the road to recovery, or already delisted, while only 21 percent are in decline ...