Group of 5. Seen just before launch of 360 Trail.
Breve descripción de lo que observaste
3 or 4 in company of other wading birds.
Not a great picture, but an uncommon bird for Alameda county
The family Threskiornithidae includes 34 species of large wading birds. The family has been traditionally classified into two subfamilies, the ibises and the spoonbills; however recent genetic studies are casting doubt on the arrangement, and revealing the spoonbills to be nested within the old world ibises, and the new world ibises as an early offshoot.