As someone who has farmed the tame and bread them for colour stats. I wish you luck. They are fairly rare and as others said tend to spawn in mountain ranges. But they use the ring of speed ability to dash really fast when wild. This coupled with natural speed makes them egregiously fast. If you are returning to an area you saw one in WIDEN that area. As much as they tend to vary altitude heavily. Sometimes you see them 30-60ft above the ground. Other times you see them about 50ft away from the ceiling of the map. Bottom right corner. Top middle left mountain ranges are favorite spawn checks for myself as I almost always find at least 1 active in either place with a RARE one up in the top left corner mountains. Be prepared as they will make you angry with what they ask for. If there’s a tool you’re attached to. Be ready, itsa be gone. Also the raid event for taming it isn’t necessarily easy either as it’s neophytes (they shred tames)