Browsing Research Articles (University of Pretoria) by Author "O'Connor, Ryan S."

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Avian thermoregulation in the heat : efficient evaporative cooling in two southern African nightjars

O'Connor, Ryan S.; Wolf, Blair O.; Brigham, R. Mark; McKechnie, Andrew E. (Springer, 2017-04)

Please read abstract in the article.
Avian thermoregulation in the heat : is evaporative cooling more economical in nocturnal birds?

O'Connor, Ryan S.; Smit, Ben; Talbot, William A.; Gerson, Alexander R.; Brigham, R. Mark; Wolf, Blair O.; McKechnie, Andrew E. (Company of Biologists, 2018)

Evaporative cooling is a prerequisite for avian occupancy of hot, arid environments, and is the only avenue of heat dissipation when air temperatures (Ta) exceed body temperature (Tb). Whereas diurnal birds can potentially ...
Diurnal body temperature patterns in free-ranging populations of two southern African arid-zone nightjars

O'Connor, Ryan S.; Brigham, R. Mark; McKechnie, Andrew E. (Wiley, 2017-09)

Endotherms allocate large amounts of energy and water to the regulation of a precise body temperature (Tb), but can potentially reduce thermoregulatory costs by allowing Tb to deviate from normothermic levels. Many data ...

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