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Trumpeter Swan

Cygnus buccinator

CA: Threatened

State threatened species in California

Large white swan with straight neck and black bill. Rare visitor to Bay Area wetlands; grazes native marsh plants, maintaining water quality in shallow ponds.

Plants that support Trumpeter Swan

3 plants

American Bulrush

Schoenoplectus americanus

high

grass

Winter foraging in tule marshes; key overwinter food resource

Bay Area native

Common Horsetail

Equisetum arvense

moderate

fern

Migration staging areas; spring and fall consumption in wetland habitats

Bay Area native

Hardstem Bulrush

Schoenoplectus acutus var. occidentalis

high

grass

Primary forage during migration and wintering in California wetlands, Oct-Mar

Bay Area native