... show you the need in studying birds of being able to distinguish between several shades of the same color. There are words to represent these different grades of color, such as 'rufous' for reddish-brown and 'fuscous' for dusky-brown; these you must learn later on, for some of them are pretty hard ones. Now it is better for you to use words whose meaning is perfectly ... — Citizen Bird • Mabel Osgood Wright and Elliott Coues
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