Natural History: This bird feeds on fish by pursuing them and diving into the water, but it also eats invertebrates. It is commonly found resting on water. This species nests in the arctic.

General Distribution: In the Presidio, this species can be found in bays and the ocean.

Frequency: This animal is abundantly found during the winter and spring and uncommon in the summer and fall.

Identifying Characteristics: During breeding season this species is distinguished by its gray neck and head with brick-red throat patch. It has a slightly upturned bill and often tilts its head slightly up.