This guide will tell you how to Catch Legendary Galarian Zapdos in the Wild Area. You have to follow the simple steps in this guide to catch it.
At the start of the wild area in a normal base game, you can easily find Zapdos walking on the ground, which runs like an ostrich. You have to head into the wild area and see the big red bird, Legendary Galarian Zapdos, as shown in the image below.
You will need to chase the bird in a large circle around the wild area to the east, where the watchtower runes are. And then down the left side of the wild area by the rolling fields.
When it starts fighting with you, you have to get into a battle with Zapdos. Defeat him in the battle, and then you can capture the legendary Galarian Zapdos.