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.
Lesser Spotted Woodpecker. The most uncommon of the three British species of woodpecker is the Lesser Spotted Woodpecker, they are much rarer birds and can be very hard bird to see, indeed they are usually high on the list of species that both bird watchers and photographers want to see.esser Spotted Woodpecker. The most uncommon of the three British species of woodpecker is the Lesser Spotted Woodpecker, they are much rarer birds and can be very hard bird to see, indeed they are usually high on the list of species that both bird watchers and photographers want to see.