Grebes

It’s easy to tell the Western Grebe and the Clark’s Grebe apart. Just look in the bird book. The Western Grebe has a black cap that extends down below the eye. The Clark’s Grebe has a black cap that stops above the eye. The bird books have pictures and drawings. It’s so clear. If the eye is in the black, it’s Western. If the eye is in the white, it’s Clark’s.

Now. Reality. Which one is this???