(Thalassarche eremita)
Chatham 's albatross ( Thalassarche eremita Murphy,1930 ) is a medium-sized black and white albatross that only nests on the so-called Pyramid,a large rocky rock in the Chatham Islands,New Zealand.Sometimes it is considered a subspecies of the cautious albatross,T.cautious.With a weight of 3.1-4.7 kg and a length of 90 cm,it is the smallest member of the cautious albatross group