Breeding condition of male red bishops under artificial photoperiods
- Authors: Craig, Adrian J F K
- Date: 1985
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/447761 , vital:74672 , https://doi.org/10.1080/00306525.1985.9639572
- Description: Testis development, as indicated by bill colour changes, and moult were followed over two years in nine birds kept under constant conditions of 14 h light:10 h dark. All birds maintained at least partial nuptial dumage throughout this period, but most continued normal cycles of wing moult. The testes continued to show cycles of enlargement and regression.
- Full Text: false
- Authors: Craig, Adrian J F K
- Date: 1985
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/447761 , vital:74672 , https://doi.org/10.1080/00306525.1985.9639572
- Description: Testis development, as indicated by bill colour changes, and moult were followed over two years in nine birds kept under constant conditions of 14 h light:10 h dark. All birds maintained at least partial nuptial dumage throughout this period, but most continued normal cycles of wing moult. The testes continued to show cycles of enlargement and regression.
- Full Text: false
The distribution of the Pied Starling, and southern African biogeography
- Authors: Craig, Adrian J F K
- Date: 1985
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/447882 , vital:74681 , https://doi.org/10.1080/00306525.1985.9639580
- Description: The Pied Starling is restricted to South Africa, Lesotho and Swaziland, but within this region it occupies a variety of habitats. Its modern distribution is certainly influenced by its association with man. However, a comparison with other vertebrate species, and with patterns of plant distribution, suggests that its geographical distribution has been determined primarily by its evolutionary history. A hypothesis for the origin of this species leads to several predictions concerning biogeography in southern Africa.
- Full Text:
- Authors: Craig, Adrian J F K
- Date: 1985
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/447882 , vital:74681 , https://doi.org/10.1080/00306525.1985.9639580
- Description: The Pied Starling is restricted to South Africa, Lesotho and Swaziland, but within this region it occupies a variety of habitats. Its modern distribution is certainly influenced by its association with man. However, a comparison with other vertebrate species, and with patterns of plant distribution, suggests that its geographical distribution has been determined primarily by its evolutionary history. A hypothesis for the origin of this species leads to several predictions concerning biogeography in southern Africa.
- Full Text:
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