4 G call(s) chick-dee by male, last overlaps female hiss, 1 G call(s) two parted hiss by female outside nest box, narration gain reduced during digitizing through narration, 2 G call(s) soft chick-dee by male, 1 G call(s) loud hiss at 0027 by female outside nest box, 1 G call(s) soft chick-dee by male