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.
1 This type of skink cannot climb so does not require vertical space.  In the wild, blue-tongued skinks eat flowers, berries, fruits, earthworms, and insects. They aren't very agile, but most of their prey is slow-moving. They have large teeth and strong jaw muscles, to allow them to crush snail shells and beetles.