. Bulletin of the British Ornithologists' Club. [ 1980: 100(4)] Growth and plumage changes of the Grey Crowned Crane Balearica regulorum gibbericeps by D. E. Pomeroy Received 1 March 1980 In his review of the African crowned cranes, Balearica, Walkinshaw (1964) recognised 2 species B. pavonina and B. regulorum. B. r. gibbericeps is the form found in Tanzania and throughout Uganda and Kenya except for the far north and, according to Mackworth-Praed & Grant (1952) also in Zambia, Malawi and Angola. Subsequently Snow (1978) placed all African crowned cranes in pavonina; but Brown e
. Bulletin of the British Ornithologists' Club. [ 1980: 100(4)] Growth and plumage changes of the Grey Crowned Crane Balearica regulorum gibbericeps by D. E. Pomeroy Received 1 March 1980 In his review of the African crowned cranes, Balearica, Walkinshaw (1964) recognised 2 species B. pavonina and B. regulorum. B. r. gibbericeps is the form found in Tanzania and throughout Uganda and Kenya except for the far north and, according to Mackworth-Praed & Grant (1952) also in Zambia, Malawi and Angola. Subsequently Snow (1978) placed all African crowned cranes in pavonina; but Brown et al. (in press), on the basis of both field observation and skins, retain both species. For simplicity, I have employed the term Crowned Crane, unless otherwise specified, to mean G. r. gibbericeps. Between 1970 and 1973 I obtained 7 Crowned Cranes of various ages in southern Uganda. Three young birds were reared in captivity for periods of. Fig. 1. Fig. 1. Weights of 5 young and 4 adult Crowned Cranes Balearica regulorum. Britton's (1970) 2 birds were from Kenya. The curve was fitted by eye. Note that age is represented on a logarithmic scale. Notes: A — young c. 7 weeks old when obtained. B = same as A. C = young c. 4 weeks old when obtained. D, E = young c. 2 days old, both dying 2 days later. X, Z and Britton's (1970) birds were adults. (above, right) Fig. 2. Tarsal lengths of 5 young and 2 adult Crowned Cranes Balearica regulorum, together with published data. Symbols as for Fig. 1. Fig. 2. Fig. 3. Wing-lengths of 5 young Crowned Cranes Balearica regulorum and a number of adult Crowned Cranes. Symbols as for Fig. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Ornithologists' Club. London : British Ornithologists' Club
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