Download full size infograph here.
Articuno! One of the big birds from the first generation. For a legendary bird, it falls a bit short in todays field, even the shadow. For PvE, you just don’t see much use for it, it’s biggest value is in Ultra League, though it doesn’t really get a lot of use there either with all the options you have. It’s a pretty shiny though!
Being double weak to rock makes this a no brainer, they just out class the other options, Rampardos was just out recently, and just happens to be a top tier attacker. Mega Aerodactyl, and a community day move Rhyperior are must haves, trade for one of those, I might have said that a few times…
Go to the official counters page for a complete list, including shadows and megas to see how your Pokémon perform.