Floyd C. Noble, Bird-Lore: Volume I No. 2 — For Young Observers… (1899)
“ They feed on pine cones, and a flock of them will take possession of a pine tree, hide themselves in the dark tufts of pine needles, and eat the seeds at their leisure. The only way you can have knowledge of their presence is by the frequent cracking of the seeds heard. For a long time we thought they were Crossbills, but one day a flock of noisy Sparrows came into the tree and drove the quiet Goldfinches out of their tufts—much to my surprise, for I did not suppose that Goldfinches, which I had been accustomed to find singing loudly, could keep so quiet. ”
