American desert hare, Anza-Borrego Desert State Park, CaliforniaSprawled face down in the sand, this black tailed jackrabbit seemed exhausted by the desert heat — which, as I mentioned in a post last week, reached 122 degrees. Those long ears, in fact, are an adaptation to the extreme conditions of the desert. The large surface area of each ear is loaded with blood vessels that release heat and thereby cool down the core body temperature of the rabbit. I, of course, was also face down in the sand enabling a ground level perspective. My ears, however, had little effect on my core body temperture.
Nikon D800 with Nikkor 200-400mm lens (at 400mm) ISO 800, f/4 at 1/100th of a second