What birds make nests underground?

Several bird species are known to make nests underground, including the common murre, puffins, and certain types of seabirds like petrels and shearwaters. These birds often dig burrows or utilize existing crevices to create safe nesting sites, protecting their eggs and chicks from predators. Additionally, some ground-dwelling birds, like the American robin, may also nest in shallow depressions in the ground, though they typically prefer more elevated locations.