Once ashore, they will prepare to nest. The group of birds can be called a breeding colony. For the most part, the islands that puffins breed on do not have trees. On rocky islands, they make their nests in crevices between the rocks. Where there is so ft soil, they make underground nests called burrows.
Puffins keep the same mate each year as well as the same burrow.
Occasionally, they will re turn and find that a rabbit has moved in. Sometimes, puffins will fight over burrows. The loser must dig a new one. They are very good at digging burrows. They use their b eaks to loosen the soil and the webbed feet to shovel it out of the hole.