Aspects of the moult, morphology and anatomy of rock pigeons
Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie/South African Journal of Science and Technology
| Field | Value | |
| Title | Aspects of the moult, morphology and anatomy of rock pigeons Aspekte van die ververing, morfologie en anatomie van kransduivve | |
| Creator | Kok, A. C. Kok, O. B. | |
| Description | Aspects of the morphology and anatomy of rock pigeons (Columba guinea) were investigated. Moulting apparently takes place throughout the year at a relatively low intensity. Marked peaks in moulting could only be distinguished for the primaries, secondaries and tail feathers of males. The renewal process for females takes place more irregularly. Apart from the bill dimensions, all standard body measurements of adult males are significantly larger than those of females. The opposite tendency occurs in immatures. Seasonal variation in liver and body mass as well as visible fat content of adult individuals can probably be related to breeding activities and the availability of seasonally abundant food sources. In comparison to the other populations sampled, considerable differences in body mass and fat content were noted for the pigeons from South West Africa. Ondersoek is ingestel na aspekte van die morfologie en anatomie van kransduiwe (Columba guinea) in Suider-Afrika. Ververing geskied klaarblyklik dxvarsdeur die jaar teen n lae intensiteit. Duidelike ververingspieke kon slegs hy die primere en sekondêre slagvere en stertvere van mannetjies onderskei word. By wyfies vind die ververingsproses op 'n onreëlmatiger wyse plaas. Afgesien van die snawelafmetings is alle standaardliggaamsafmetings van volwasse mannetjies betekenisvol groter as die van wyfies. Die teenoorgestelde neiging kom by onvolwassenes voor. Seisoensvariasie in lewer- en liggaamsmassa asook die sigbare vetinhoud van volwasse indiwidue Iwu waarskynlik met broeiaktiwiteite en die beskikbaarheid van seisoenaaloorvloedige voedselbronne verband. In vergelyking met die ander gemonsterde bevolkings is beduidende verskille in liggaamsmassa en vetinhoud vir die kransduiwe vanaf Suidwes-Afrika waargeneem. | |
| Publisher | AOSIS | |
| Date | 1989-03-17 | |
| Identifier | 10.4102/satnt.v8i4.884 | |
| Source | Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie; Vol 8, No 4 (1989); 136-144 Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie; Vol 8, No 4 (1989); 136-144 2222-4173 0254-3486 | |
| Language | eng | |
| Relation |
The following web links (URLs) may trigger a file download or direct you to an alternative webpage to gain access to a publication file format of the published article:
https://journals.satnt.aosis.co.za/index.php/satnt/article/view/884/1842
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