Tubenosed seabirds are found mostly on islands with few land-based predators. Those that nest on the mainland do so primarily in deserts or mountainsides, where there are fewer predators. Because the larger birds need strong winds to help them get airborne, breeding sites must be windswept. This makes the sub-Antarctic islands perfect for breeding. Unless they are breeding, these birds spend their time on the ocean where food is abundant. Some species migrate, move from place to place, between the Northern and Southern Hemispheres, repeating the same migration pattern each year.
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