Birds' Nests

"Very few species use the same material uniformly. I have seen the nest of the robin quite destitute of mud. In one instance, it was composed mainly of black horse-hairs, arranged in a circular manner, with a lining of fine yellow grass; the whole presenting quite a novel appearance. In another case, the next was chiefly constructed of a species of rock moss."Birds'-Nests, In The Catskills by John Burroughs