Additionally, since protection, the locally extinct Rhinoceros Auklet has begun to breed on the islands again.

Many are burrow-nesters, such as the rhinoceros auklet, ancient murrelet and tufted puffin.

The mancallines probably evolved from proto-puffins, which must have been birds not dissimilar to the Rhinoceros Auklet.

The Rhinoceros Auklet (Cerorhinca monocerata) is a seabird and a close relative of the puffins.

Overall, they resemble a horn-less and unmarked Rhinoceros Auklet (Cerorhinca monocerata).

The puffins and the Rhinoceros Auklet are closely related, together composing the subfamily Fraterculini.

The Rhinoceros Auklet nests in burrows dug into the soil, or in natural caves and cavities between 1 and 5 m deep.

Since it may be more closely related to the Rhinoceros Auklet than the other puffins, it is sometimes placed in the monotypic genus Lunda.

In recent years the population of Rhinoceros Auklet have been in decline as a result of the predator activities of non-native European rabbits.

Rebar worked in collaboration with Oikonos Ecosystem Knowledge, a conservation biology and habitat restoration non-profit organization, to restore the degraded habitat for the Rhinoceros Auklet.

The Rhinoceros Auklet (Cerorhinca monocerata) has sometimes been included in the genus Fratercula, and some authors place the Tufted Puffin in the genus Lunda.

Those on display include the sea birds Tufted Puffin, Common Murre, Rhinoceros Auklet, Pigeon Guillemot, and the shore bird Black Oystercatcher.

These are the northern elephant seal, harbor seal, Steller's sea lion, California sea lion, and the northern fur seal (the last of which, like the Rhinoceros Auklet, began to return to the island again after protection).

The Rhinoceros Auklet (also known as the Rhino Auklet, Horn-billed Puffin, or Unicorn Puffin), is a medium-sized auk with a large, strong, orange/brown bill (with the 'horn' protruding from it).

A relatively small puffin, Dow's Puffin is intermediate regarding the extent of dorsoventral expansion of the rostrum and mandible, between living puffins of the genus Fratercula, and the closely related Rhinoceros Auklet (Cerorhinca monocerata).

Molecular work has not yet resolved the relationship between the Aethia auklets, but the group is a sister group to Cassin's Auklet, which is, in turn, a sister group to the Fraterculine auks (puffins and Rhinoceros Auklet).

The Rhinoceros Auklet (Cerorhinca monocerata) is a seabird and a close relative of the puffins.

Overall, they resemble a horn-less and unmarked Rhinoceros Auklet (Cerorhinca monocerata).

The Rhinoceros Auklet (Cerorhinca monocerata) has sometimes been included in the genus Fratercula, and some authors place the Tufted Puffin in the genus Lunda.

A relatively small puffin, Dow's Puffin is intermediate regarding the extent of dorsoventral expansion of the rostrum and mandible, between living puffins of the genus Fratercula, and the closely related Rhinoceros Auklet (Cerorhinca monocerata).