bittern
['ptarmigan', 'quill, quill pen', 'common newt, Triturus vulgaris', 'lakeside, lakeshore', 'walking stick, walkingstick, stick insect', 'bullfrog, Rana catesbeiana', "yellow lady's slipper, yellow lady-slipper, Cypripedium calceolus, Cypripedium parviflorum"]