. How to sex cage birds (British and foreign) . Striated Coly (Colius striates). The female has a longer and broader beak than the male. Theupper mandible is also more curved, as in C. castanonotus. Thecrown of the head is paler, rather more ashy. Cape Coly (Colius capensis). The female is larger than the male; her beak is longer and moretapering. It will be seen from the foregoing that the sexes of theColies differ very little in plumage, so that the size and the form ofthe beak are of considerable importance. Kingfishers (Alcedinidc). Although the European Kingfisher is not the most satisfac
. How to sex cage birds (British and foreign) . Striated Coly (Colius striates). The female has a longer and broader beak than the male. Theupper mandible is also more curved, as in C. castanonotus. Thecrown of the head is paler, rather more ashy. Cape Coly (Colius capensis). The female is larger than the male; her beak is longer and moretapering. It will be seen from the foregoing that the sexes of theColies differ very little in plumage, so that the size and the form ofthe beak are of considerable importance. Kingfishers (Alcedinidc). Although the European Kingfisher is not the most satisfactorybird to keep in a cage or small aviary, it has been successfully keptby various aviculturists. In an extensive aviary enclosing waterwell stocked with small fish it should be possible to breed it. Theforeign Kingfishers, however, are more easily kept in captivity European Kingfisher (Alcedo ispida). The female is slightly smaller than the male, and has a moreslender bill, the under surface of which is largely coloured redinstead of 100 How to Sex Cage Birds. White-breasted Kingfisher {Halcyon smyrnensis). The bill of the female is considerably broader from the base tothe third fourth than in the male, and is noticeably shorter. I candiscover no constant difference in plumage. Sacred Kingfisher {Halcyon sancta). The bill of the female is slightly longer than that of the male, andtapers more gradually. When viewed from above it is seen to benot so full in the middle. This sex is altogether duller than themale, more olive above and on the breast, which is of a pale brownishrather than huffish tint; the feathers retain the dusky fringescharacteristic of the young plumage. New Zealand Kingfisher (Halcyon vagans). A larger and duller representative of //. sancta. The female hasa much longer and more regularly tapering bill than the male, and amuch less vivid blue-green eyebrow streak. The breast feathers,especially at the sides, are partly fringed with dark brown, but les
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