Pidgeot (anime)

Ash's pigeot was caught in the episode Ash Catch's a Pokemon as a pigeotto.Then when he was heading to orange island to bring the gs ball back to professor oak as requested on the way there a bunch of pigey and pigeotto did not get along with some spearows and a fearow leading them then it appeared that the fearow was the spearow that ash threw a stone at at the start of his journey.Then ash ask his pigeotto to convice the pigey and pigeotto that he wants to help them.When Ash's pigeotto was fighting against the Fearow and Spearows, pigeotto was weak when suddenly it evolve into a pigeot.When the fearow was weak ash try to catch it but fail to do so.So with the help of Ash's Pikachu they were able to chase the fearow away.Then ash releases his pigeot to protect the pigeotto and pigeys.