Having trouble finding the same types of Pokemon to evolve them? Niantic will be incorporating a new bonus that would make catching those Pokemon a lot easier.
With the new update, each Pokemon caught with the new feature will go towards a tally. Catch enough of those from the same types, and the same sorts of Pokemon will become easier to find.
We are adding a new feature which grants a catch bonus when you earn medals based on catching certain types of Pokémon (Kindler, Psychic, Gardener, etc.). These new bonuses will give you a better chance of capturing Pokémon with a related type. For example, as you reach a higher tier for the Kindler Medal, your bonus to catch Fire-type Pokémon such as Charmander, Vulpix and Ponyta increases.
Trainers can work their way to a new tier by catching many Pokémon of the same type. If a Pokémon has multiple types, your bonus will be the average of your bonuses for each type. For example, Pidgey is both Normal and Flying type. Your bonus in this case would be the average of your Normal-type and Flying-type bonuses.
So basically, any player who takes advantage of the feature will have better odds at catching rare Pokemon. Think of all those Magikarps you’ve caught, they could be giving you extra bonus to water types in the future.
Niantic hasn’t dropped any hints on when the update is coming, but you’ll be sure to hear from us when it does.