The evolution of the bullfinch species started soon after the Pine Grosbeak 's ancestors diverged from them ( at the end of the Middle Miocene , about a dozen mya ) , and it is quite possible that the latter species evolved in North America ; what is fairly certain is that the bullfinch radiation started in the general area of the Himalayas .
The evolution of the bullfinch species started soon after the Pine Grosbeak 's ancestors diverged from them ( at the end of the Middle Miocene , about a dozen million years ago ( mya ) .