Purple finch There are two subspecies of the purple finch, "H. p. purpureus" and "H. p. californicus". "H. p. californicus" was identified by Spencer F. Baird in 1858. It differs from the nominate subspecies in that it has a longer tail and shorter wings. The plumage of both males and females is darker, and the coloration of the females is more greenish. The bill of "C. p. californicus" is also longer than that of the nominate subspecies. Adults have a short forked brown tail and brown wings and are about in length and weigh . Adult males are raspberry red on the
Colour trade mark 1425 (TTAB 2007), the purple colour was considered functional for coated abrasives, because “[i]n the field of coated abrasives, color serves a myriad of functions, including color coding, and the need to color code lends support for the basic finding that color, including purple, is functional in the field of coated abrasives having paper or cloth backing.” Saint-Gobain Corp. v. 3M Co., 90 USPQ2d 1425, 1447 (TTAB 2007). The Trademark Trial and Appeal Board, in In re Ferris Corp., 59 USPQ2d 1587 (TTAB 2000), held that the colour pink for wound dressings was functional and not registrable, as its colour