This morning at Lathrop State Park we found two Black Terns and one Common Tern. Have been wondering what all those new huge floats and buoys near the swim beach were good for...now we know...terns LOVE them!
Have to admit we puzzled over the Common Tern for some time, it was still in breeding plumage. Red-orange bill with black tip - bill seemed too narrow for Forster's, red-orange legs. When seated tail was definitely shorter than wings. In flight showed dark wedge on primaries.
Lots and lots of Wilson's Warblers flying about