Do mutton birds migrate

Yes, mutton birds, specifically the sooty shearwater (Ardenna grisea), are known for their long migratory patterns. They breed in the Southern Hemisphere, particularly in New Zealand, and migrate thousands of miles to the Northern Hemisphere, reaching areas like the North Pacific and North Atlantic. This migration occurs annually, with birds traveling up to 40,000 kilometers round trip, making it one of the longest migrations of any bird species.