https://commons.ru.ac.za/vital/access/manager/Index en-us 5 Thermoregulation under seminatural conditions in two species of African barbets (Piciformes Lybiidae) https://commons.ru.ac.za/vital/access/manager/Repository/vital:74728 Tue 06 Aug 2024 12:52:07 SAST ]]> Comparison of physiological responses to high temperatures in juvenile and adult Cape Rockjumpers Chaetops frenatus https://commons.ru.ac.za/vital/access/manager/Repository/vital:74727 Tue 06 Aug 2024 12:46:01 SAST ]]> Body mass and condition of a fynbos bird community investigating impacts of time, weather and raptor abundance from long-term citizen-science datasets https://commons.ru.ac.za/vital/access/manager/Repository/vital:74726 Tue 06 Aug 2024 12:39:14 SAST ]]> An experimental test of the allotonic frequency hypothesis to isolate the effects of light pollution on bat prey selection: https://commons.ru.ac.za/vital/access/manager/Repository/vital:40171 Thu 04 Jul 2024 09:13:12 SAST ]]> The role of ambient temperature and body mass on body temperature, standard metabolic rate and evaporative water loss in southern African anurans of different habitat specialisation https://commons.ru.ac.za/vital/access/manager/Repository/vital:73794 Thu 04 Jul 2024 09:04:07 SAST ]]> No evidence of genetic structure in a sky island endemic: implications for population persistence under a shrinking thermal niche https://commons.ru.ac.za/vital/access/manager/Repository/vital:73793 Thu 04 Jul 2024 08:56:06 SAST ]]> Higher temperatures are associated with reduced nestling body condition in a range restricted mountain bird https://commons.ru.ac.za/vital/access/manager/Repository/vital:73791 Thu 04 Jul 2024 08:47:09 SAST ]]> Differences in the use of surface water resources by desert birds are revealed using isotopic tracers https://commons.ru.ac.za/vital/access/manager/Repository/vital:73790 Thu 04 Jul 2024 08:20:16 SAST ]]> Avian thermoregulation in the heat: phylogenetic variation among avian orders in evaporative cooling capacity and heat tolerance https://commons.ru.ac.za/vital/access/manager/Repository/vital:73789 Thu 04 Jul 2024 07:49:16 SAST ]]> An oversimplification of physiological principles leads to flawed macroecological analyses https://commons.ru.ac.za/vital/access/manager/Repository/vital:73788 Thu 04 Jul 2024 06:24:27 SAST ]]> Regularly drinking desert birds have greater evaporative cooling capacity and higher heat tolerance limits than non‐drinking species https://commons.ru.ac.za/vital/access/manager/Repository/vital:73900 Sun 07 Jul 2024 13:18:13 SAST ]]> Caves, crevices and cooling capacity roost microclimate predicts heat tolerance in bats https://commons.ru.ac.za/vital/access/manager/Repository/vital:73899 Sun 07 Jul 2024 13:07:23 SAST ]]> Comparison of physiological responses to high temperatures in juvenile and adult Cape Rockjumpers Chaetops frenatus https://commons.ru.ac.za/vital/access/manager/Repository/vital:73898 Sat 06 Jul 2024 10:13:54 SAST ]]> Body mass and condition of a fynbos bird community investigating impacts of time, weather and raptor abundance from long-term citizen-science datasets https://commons.ru.ac.za/vital/access/manager/Repository/vital:73897 Sat 06 Jul 2024 09:53:52 SAST ]]> Behaviour of an alpine range-restricted species is described by interactions between microsite use and temperature https://commons.ru.ac.za/vital/access/manager/Repository/vital:73896 Sat 06 Jul 2024 09:40:59 SAST ]]> Avian thermoregulation in the heat: is evaporative cooling more economical in nocturnal birds? https://commons.ru.ac.za/vital/access/manager/Repository/vital:73895 Sat 06 Jul 2024 09:09:35 SAST ]]> 31° South: the physiology of adaptation to arid conditions in a passerine bird. https://commons.ru.ac.za/vital/access/manager/Repository/vital:73894 Sat 06 Jul 2024 09:06:41 SAST ]]> Wand plant architecture in the Fynbos: Testing the rodent herbivory hypothesis https://commons.ru.ac.za/vital/access/manager/Repository/vital:73795 Mon 08 Jul 2024 06:48:50 SAST ]]> Heat dissipation behaviour of birds in seasonally hot arid‐zones: are there global patterns? https://commons.ru.ac.za/vital/access/manager/Repository/vital:73906 Mon 08 Jul 2024 06:40:13 SAST ]]> Using Facebook user photos to quantify surface water dependency in Southern African arid-zone bird species https://commons.ru.ac.za/vital/access/manager/Repository/vital:73905 Mon 08 Jul 2024 06:24:05 SAST ]]> Seasonal physiological responses to heat in an alpine range-restricted bird: the Cape Rockjumper (Chaetops frenatus) https://commons.ru.ac.za/vital/access/manager/Repository/vital:73904 Mon 08 Jul 2024 06:17:01 SAST ]]> Seasonal metabolic adjustments in an avian evolutionary relict restricted to mountain habitat https://commons.ru.ac.za/vital/access/manager/Repository/vital:73903 Mon 08 Jul 2024 06:10:11 SAST ]]> Multi-directional effects of warming temperatures on the reproductive success of a threatened alpine-endemic bird, and implications for conservation management https://commons.ru.ac.za/vital/access/manager/Repository/vital:73902 Mon 08 Jul 2024 06:01:02 SAST ]]> The functional significance of facultative hyperthermia varies with body size and phylogeny in birds https://commons.ru.ac.za/vital/access/manager/Repository/vital:73901 Tb, environmental heat gain and evaporative water loss rates are reduced; and M3) by storing heat via increases in Tb which reduces evaporative heat loss demands and conserves wa-ter. Although individuals may benefit from all three mechanisms during heat exposure, the relative importance of each mechanism has not been quantified among species that differ in their body size, heat toler-ance and mechanisms of evaporative heat dissipation. We measured resting metabolism, evaporative water loss and real‐time Tb from 33 species of birds representing nine orders ranging in mass from 8 to 300 g and estimated the water savings associated with each proposed mechanism. We show that facultative hyperthermia varies in its benefits among species.]]> Mon 08 Jul 2024 05:49:41 SAST ]]> Increasing temperatures increase the risk of reproductive failure in a near threatened alpine groundnesting bird, the Cape Rockjumper Chaetops frenatus: https://commons.ru.ac.za/vital/access/manager/Repository/vital:38825 3 years since fire respectively), (2) nest concealment and (3) temperature. We found that nests had better survival at lower temperatures, with snake predation (our main source of predation) increasing in higher temperatures.]]> Fri 26 Apr 2024 11:08:49 SAST ]]>