Coiba Spinetail

The Coiba spinetail is 15 to 16 cm (5.9 to 6.3 in) long. Its upperparts including the tail are russet brown, though the rump is somewhat paler. Most of the face is a dull creamy buff with a bit of gray and a pinkish buff supercilium. Its throat is white, the breast and belly white with a buff wash, and the flanks tawny. Voice: The Coiba spinetail's song is "2-4 short introductory notes, followed by 4-6 longer notes given rapidly at the same pitch followed by about 7 even longer notes that slow down and fall in pitch." Both sexes sing, but it appears that one sex's song is stronger and clearer than the other's. Two calls are known, a "chidididit" and a "deet-deet-dee-dididit".