There are very many types of pigeon, and the Latin Name of each type begins with Columba.
They are intelligent enough to have the ability to navigate very long
They mate for life, or until their mate dies, this shows loyalty.
The Huge Populations of Pigeons World-wide shows that they have had the intelligence to evolve and survive;
Not all birds are as thick as chickens.
Columba Livia means Rock-Dove:(The Common City Pigeon.)
There are Thirty or Forty Different Kinds of Pigeon, a few of which are now extinct.