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.
Darwin's finches (also known as the Galapagos galÃ¡pagos) finches are a group of about fifteen species of passerine. Birds they are often classified as the Subfamily geospizinae or Tribe. Geospizini they belong to the tanager family and are not closely related to the true. finches