DAWYCK, Scotland—On a recent ramble through the Scottish woods, Roy Watling fingered a dull yellow mushroom and said proudly: "Do you know whose fungus that is? It's mine." The mushroom Boletus ...

The bright yellow plumage of male goldfinches is a sure sign of spring. American and lesser goldfinches are common backyard birds and year-round residents of California. The easiest way to distingu… ...