ClipArt ETC
"Cat-Bird. Slate-gray, paler and more grayish-plumbeous below; crown of head, tail, bill, and feet black. Quills of the wing blackish, edged with the body-color. Under tail-coverts rich dark chestnut or mahogany-color" Elliot Coues, 1884

Catbird

"Cat-Bird. Slate-gray, paler and more grayish-plumbeous below; crown of head, tail, bill, and feet black.…

"Mocking-Birds. Bill much shorter than head, scarcely curved as a whole, but with gently-curved commissure, notched near the end. Rictal vibrissae well developed. Tail rather longer than wings, rounded, the lateral feathers being considerably graduated. Wings rounded. (Tarsal scutella sometimes obsolete.) Tarsi longer than the middle toe and claw. Of this genus there are two well marked sections (represented by the mocking-bird and cat-bird respectively), which ay be distinguished by color:" Elliot Coues, 1884

Mockingbird

"Mocking-Birds. Bill much shorter than head, scarcely curved as a whole, but with gently-curved commissure,…