For tagging purposes, this tag refers to the white or mostly white birds, such as the "dove of peace" that is commonly associated with the term "dove." 

The term dove is frequently used interchangeably with the term pigeon.  When used more specifically, the term refers to smaller members of the bird family Columbidae, whose members are referred to by either the terms dove or pigeon. Members of this family fall under two major groups based on their diet, with one group predominately eating seeds and the other predominately eating fruits.

Gray or bluish-gray birds should be tagged [[pigeon]] instead.
白鸽 白鴿 鸽子(白色)