Pigeons, alongside with Doves form the family of 'Columbidae' birds. They live all over the world in a wide range of geographical ranges but are most well known due to their their prevalence in urban areas.
No, it is a noun, referring to a classification of birds. It can be used as a noun adjunct in such terms as pigeon droppings and pigeon coop.
Goura victoria
The scientific name would be Coccoloba diversifolia.
American Playhouse - 1981 Pigeon Feathers 7-7 was released on: USA: 17 February 1988
The scientific or taxonomic name would be Columba livia.
Lassie - 1954 The Pigeon 7-29 was released on: USA: 2 April 1961
The scientific or taxonomic name would be Columba fasciata.
The scientific or taxonomic name would be Plethodon petraeus.
Tumbler
I think it's 7''. More or less.
Hawaiian Eye - 1959 White Pigeon Ticket 2-7 was released on: USA: 26 October 1960
7 levels of classification from broadest to most specific level