Clubbing is an enlargement of the ends of the fingers and a downward sloping of the nails. Although it's not caused by chronic obstructive pulmonary disease (COPD), it can be a sign of coexisting lung cancer or other lung disorders in patients with COPD. Clubbing is sometimes called digital clubbing. It can affect the fingers and/or toes.
Relatives. Darwin's finches can be divided into groups based on beak type. There are three species of tree finch: the small tree finch, medium tree finch, and large tree finch. Tree finches have grasping beaks.
Cut throat Finches â They also belong to Australian rainforests and their live in open grass fields. They eat seeds, insects and fruits and in size they can be 2-4 inches long, which means they are a small tropical bird species. Their population in forests is good enough at the moment.