The terns which Crozet saw were probably of the species _Sterna vittata_, which breeds on the islands of St. Paul and Amsterdam. It also frequents the Tristan da Cunha Group, and Gough Island and Kerguelen Island, so that it enjoys a wide distribution in the Southern Ocean. The gulls may have been Dominican Gulls (_Larus dominicanus_), which are to be found at a considerable distance from any continental land. The penguins which frequent the seas adjacent to the islands which Marion named Ile de la Caverne, Iles Froides, and Ile Aride are _Aptenodytes patagonica_, _Pygoscelis papua_, _Catarrhactes chrysocome_, and _Catarrhactes chrysolophus_. The eggs of the last-named penguin have been found on the Ile Aride, which is now known as Crozet Island, and the whole group as the Crozet Islands. The Cape Petrel (_Daption capensis_) nests on Tristan da Cunha and Kerguelen Island. A Cormorant (_Phalacrocorax verrucosus_) inhabits Kerguelen Island, but its occurrence on the Crozet Islands is doubtful. Finally, Crozet saw on the island on which he landed a white bird, which he mistook for a white pigeon, and argues that a country producing seeds for the nurture of pigeons must exist in the vicinity. This bird was probably the Sheath-bill (_Chionarchus crozettensis_) of the Crozet Islands. The next land visited was Tasmania, where the vessels cast anchor on the east side of the island. Like their Dutch predecessors, the French mariners bestowed the names of European birds upon the birds which they saw in these new lands, and it would be an idle task to seek the equivalents of the ousels, thrushes, and turtle-doves which Crozet saw in Tasmania. There can be no doubt, however, about his pelicans, for _Pelecanus conspicillatus_ still nests on the east coast of the island or on islets adjacent to the coast. The duration of Crozet's sojourn in New Zealand was about four months in the autumn and winter of 1772. The vessels anchored in the Bay of Islands. Crozet has given a long enumeration of the birds which he saw in New Zealand. We will not seek to find what his wheatears and wagtails, starlings and larks, ousels and thrushes may have been, but we may make an exception in favour of his black thrushes with white tufts ('grives noires a huppes blanches'). These birds were evidently Tuis (_Prosthemadura Novae-Zealandiae_).