Straw-coloured fruit bat (eidolon helvum) kasanka national park, zambia, in flight at sunrise

horizontals skies park developing country zambian endothermic animals horizontal developing countries wildlife parks pteropodidae straw coloured silhouettes eidolon flight vertebrate endotherm sunset mammal helvum chiroptera silhouette warm blooded flight nocturnal winged warm vertebrates national blooded sunsets sunrise mammals nature bats mammalia african bat zambia zoology silhouetted third world bat africa kasanka fruit flying fauna sky animal