Thos. S. Roberts, Bird-Lore Volume I No. 1 — The Camera as an Aid in the Study of Birds (1899)
“ CHICKADEE LEAVING NEST Springtime finds them with a mellow, long-drawn love whistle of two notes and thoughts of home and home like things. Soon, down by the lake or brook-side, or in some moist woodland glade, where birch and willow trunks long since dead and soft with age stand sheltered among the growing trees, the little Black-cap and his chosen mate pick out a cozy retreat. This, perhaps, is some deserted Wood-pecker den. decayed knothole, or more often it is a burrow of their own making, and here they assume the delights and cares of wedded life. ”
