Riverside Citizen Science - Birds

Use this guide as a reference to bird species documented to occur within the City of Riverside.
Riverside Citizen Science seeks to engage our community in observing and documenting Riverside's natural environment. Observers are welcome to contribute to a growing database of biodiversity ...more ↓

Lesser Scaup

The Lesser Scaup (Aythya affinis) is a small North American diving duck that migrates south as far as Central America in winter. It is colloquially known as the Little Bluebill or Broadbill because of its distinctive blue bill. The origin of the name scaup may stem from the bird's preference for feeding on scalp – the Scottish word for clams, oysters, and mussels; ...more ↓

Edited by Curator, James M. Bryant, some rights reserved (CC BY-SA)