Something wierd happens when I catch pokémon?

When I throw a pokeball at a Pokémon sometimes the pokeball makes a whistle sound, it shakes one time before landing, and successfully catches the pokémon in one shake. This specifically happens when I immediately throw the Pokéball without battling, why is this happening?

Pleaselog inorregisterto add a comment.

This is normal. It is a special mechanic added in Generation 5 called a “critical capture”, which happens randomly and causes the PokeBall to shake only once instead of three times before the Pokemon is caught, meaning that the chance of capture is increased considerably. It is purely a coincidence that this happens to you mostly when you throw a PokeBall on the first turn.

The chance of landing a critical capture is based on the amount of Pokemon that have been registered as caught in the Pokedex.According to Bulbapedia, the chance ranges from 0% with 30 or fewer species caught to around 41.67% when the Pokedex has over 600 completed entries. The chance can be calculated as follows: (capture ratex multiplier) / 6. The value of the multiplier is determined by the number of Pokemon registered as caught in the Pokedex.

Once the formula has been completed, the result is rounded down to the nearest integer. A random number between 0 and 255 is then generated; if this number is less than the number the formula generated, then the critical capture will take place.

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