How to find and catch Farfetch’d in Pokémon Go — worldwide for 48 hrs!

During the Travel Challenge, trainers caught 3 billion Pokémon in a week to unlock Farfetch’d — the Asian regional exclusive — worldwide. But Farfetch’d is only unlocked for 48 hours

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How to find and catch Farfetch’d in Pokémon Go — worldwide for 48 hrs!