Big Pecks

Protects against Defense drops.

Full effect

This Pokémon's Defense cannot be lowered by other Pokémon. This Pokémon can still be passed negative Defense modifiers through Heart Swap or Guard Swap.

In game description

Prevents the Pokémon from having its Defense stat lowered.

Pokemon with Big Pecks

#0016

Pidgey hidden #0017

Pidgeotto hidden #0018

Pidgeot hidden #0441

Chatot hidden #0519

Pidove #0520

Tranquill #0521

Unfezant #0580

Ducklett #0581

Swanna #0629

Vullaby #0630

Mandibuzz #0661

Fletchling #0821

Rookidee hidden #0822

Corvisquire hidden #0962

Bombirdier

Using Big Pecks in Cobblemon

Abilities are passive and always active, so Big Pecks costs you nothing to run. If it is marked hidden on a species above, expect it to be harder to obtain: servers differ in whether hidden abilities come from breeding, an Ability Patch, or events.

See the Pokedex for which abilities each species can have, and IVs, EVs and breeding for how to actually pass one down.