The Rock Pigeons (Columba
livia), also known as doves or pigeons, include domestic pigeons and fancy
pigeons. An adult pigeon measures 29 to 37 cm in length and weighs 238 to 380
grams. Its head, neck, and chest are dark bluish-gray having shiny opalescence
of greenish, yellowish, and reddish-purple. It has two black bars on each wing,
a broad black band on tail end, and pink feet. The pigeons are old world birds
residing in South Asia, North Africa, and western and southern Europe. In the
early 17th century, they were introduced into North America by the
colonists. Later, they spread to parts of South America and Australia.