. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 8o DISCOVERY REPORTS companies at South Georgia continued whaling during the winter, and in most winter seasons up to that date a considerable number of Humpback whales was taken. Speaking of the northern Humpbacks Ingebrigtsen (1929) says, "It is mainly the adult animals of both sexes that take part in the great breeding and food migrations, while the younger animals are more erratic in their ; When the Humpback occurred in South Georgian waters in large numbers, in the day
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 8o DISCOVERY REPORTS companies at South Georgia continued whaling during the winter, and in most winter seasons up to that date a considerable number of Humpback whales was taken. Speaking of the northern Humpbacks Ingebrigtsen (1929) says, "It is mainly the adult animals of both sexes that take part in the great breeding and food migrations, while the younger animals are more erratic in their ; When the Humpback occurred in South Georgian waters in large numbers, in the days of the great Humpback fishery there, according to Hinton (1925), it used to appear off the island first in October; the largest herds used to arrive in November and remain during December and January; and by the middle of May they were all gone. The latter remark needs qualifying, for, as shown above, a fair number of Humpbacks was at one time taken during the winter at South Georgia. If we now compare Figs. 79 and Figs. 55 and 56 it is evident that the peak in Fig. 56 falls between the peaks in Fig. 79, showing that parturition occurs at the northern limit of the migration in the month of August and pairing takes place during the first part of the migration to the south. Olsen (1914-15) states that the virgin females go north for pairing, and that it is rare to see pairing taking place off the coast of South Africa, though the graph in Fig. 1^5 shows that it undoubtedly occurs. Figs. 81 and 82, in which the length frequencies of both sexes of Humpback whales are plotted for several seasons at South Georgia and South Africa, show that the com- if) ID L. QJ E 12- fl- 4-- / \ / \ l 3 10 IE 14 Total Length in metres c, hr â M.^til RPC IQin Sdldanha Bai^ 1926. 1930-1 â ---Cape Fig. 81. Humpback whale. Males. Length fre- quencies in the catches at South Georgia and South Africa. B 10 12 14 "fbtal Length in metre5 5 Africa: Natal
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