Editing Common ostrich (section)

====Physiological challenges====
The common ostrich is a [[Xerocole|xeric]] animal, due to the fact that it lives in habitats that are both dry and hot.<ref name=zool241 /> Water is scarce in dry and hot environments, and this poses a challenge to the ostrich's water consumption. Also the ostrich is a ground bird and cannot fly to find water sources, which poses a further challenge. Because of their size, common ostriches cannot easily escape the heat of their environment; however, they dehydrate less than their small bird counterparts because of their small [[surface area to volume ratio]].<ref name=Skadhaugeetal>{{cite journal|last=Skadhauge|first=E|author2=Warüi CN |author3=Kamau JM |author4=Maloiy GM |title=Function of the lower intestine and osmoregulation in the ostrich: preliminary anatomical and physiological observations|journal=Quarterly Journal of Experimental Physiology|year=1984|volume=69|issue=4|pages=809–18|pmid=6514998 |doi=10.1113/expphysiol.1984.sp002870|doi-access=free}}</ref> Hot, arid habitats pose osmotic stress, such as [[dehydration]], which triggers the common ostrich's [[Homeostasis|homeostatic]] response to osmoregulate.