Long-tailed finch length. It has a prominent roundish black bib on its throat and upper chest and a long pointed black tail. It has pinkish brown upperparts with paler plumage below its bib over the lower breast and abdomen. It has a grey head, a white ear-patch, and black lores. It has black patches on its upper flanks and its rump and undertail coverts are white. The beak colour of the adult long-tailed finch varies from red through orange to yellow. The subspecies with red beaks is sometimes called Heck's grass finch "Poephila acuticauda hecki", and the nominate subspecies with orange or
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