Doves are Pigeons and Pigeons are Doves

Doves and Pigeons are the same species

Both dove and pigeon refer to the 300+ species of birds from the Columbidae family  

There's no difference between a pigeon and a dove in scientific nomenclature, but colloquial English tends to categorize them by size. ... 

A common pigeon, for example, is called both a rock dove and a rock pigeon.