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 colonies from May to August. It breeds in large expanses of water with nest platforms often floating in emergent vegetation. It can often be found in mixed flocks with Clark's Grebe.

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

Frequency: This animal is abundantly found during the fall, winter, and spring months.

Identifying Characteristics: This species is distinguished by its long, white, swanlike neck. It displays a dark/black plumage on its upper side and is white below.

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