bald eagle, American eagle, Haliaeetus leucocephalus
['cliff, drop, drop-off', 'rule, ruler', 'cougar, puma, catamount, mountain lion, painter, panther, Felis concolor', 'little blue heron, Egretta caerulea', 'tick', 'racket, racquet', 'Arctic fox, white fox, Alopex lagopus']