Big Pecks is one of the many abilities that are inheritable by Pokémon.
Function
Big Pecks will cause: The wielder’s Defense cannot be lowered.
Inheritable Pokémon
Predominant ability
Primary
| # No. | Pokémon | Type 1 | Type 2 | Ability 1 | Ability 2 | Hidden Ability | |
|---|---|---|---|---|---|---|---|
| 519 |  | Pidove | Normal | Flying | Big Pecks | Super Luck | Rivalry | 
| 520 |  | Tranquill | Normal | Flying | Big Pecks | Super Luck | Rivalry | 
| 521 |  | Unfezant | Normal | Flying | Big Pecks | Super Luck | Rivalry | 
| 629 |  | Vullaby | Dark | Flying | Big Pecks | Overcoat | Weak Armor | 
| 630 |  | Mandibuzz | Dark | Flying | Big Pecks | Overcoat | Weak Armor | 
| 661 |  | Fletchling | Normal | Flying | Big Pecks | Gale Wings | 
Secondary
| # No. | Pokémon | Type 1 | Type 2 | Ability 1 | Ability 2 | Hidden Ability | |
|---|---|---|---|---|---|---|---|
| 580 |  | Ducklett | Water | Flying | Keen Eye | Big Pecks | Hydration | 
| 581 |  | Swanna | Water | Flying | Keen Eye | Big Pecks | Hydration | 
Hidden ability
| # No. | Pokémon | Type 1 | Type 2 | Ability 1 | Ability 2 | Hidden Ability | |
|---|---|---|---|---|---|---|---|
| 16 |  | Pidgey | Normal | Flying | Keen Eye | Tangled Feet | Big Pecks | 
| 17 |  | Pidgeotto | Normal | Flying | Keen Eye | Tangled Feet | Big Pecks | 
| 18 |  | Pidgeot | Normal | Flying | Keen Eye | Tangled Feet | Big Pecks | 
| 441 |  | Chatot | Normal | Flying | Keen Eye | Tangled Feet | Big Pecks |