oa Madoqua - Seasonal effects on nutrition, reproduction and aspects of thermoregulation in the Namaqua sandgrouse (Pterocles namaqua)
|Article Title||Seasonal effects on nutrition, reproduction and aspects of thermoregulation in the Namaqua sandgrouse (Pterocles namaqua)|
|© Publisher:||Namibian Ministry of Environment and Tourism|
|Affiliations||1 *Nature Conservation, Etosha National Park, Okaukuejo, South West Africa. **Zoology Department, University of Cape Town, Rondebosch|
|Publication Date||Jan 1978|
|Pages||19 - 29|
|Keyword(s)||Body measurements, Cleome, Drought-resistant vegetation, Fat index, Gonads, Hormone, Moist ocean winds, Moulting, Nesting frequency, Nutrition, Plasma levels, Preferred food, Radio-immunological methods, Reproductive data, Soil temperatures, Tephrosia dregeana, Thyroid activity and Vitellogenesis|
On the basis of both field observations of nestine birds and detailed chemical and morphological studies on 10 birds (5 male and 5 female) per month, it would appear as if P. namaqua favours the cooler winter months for breeding in the Namib Desert Park. In view of the simple nature of the nest scrape and studies on the thermoregulatory behaviour of this species, we have concluded that soil-surface temperatures play a critical role in determining the success of breeding.
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