Arabian oryx are gregarious animals forming herds containing five to thirty individuals (3). The herds increase in size in good conditions, however, in poor conditions the group size is usually composed of a male, a couple of females and their young (5). Other males adopt a more solitary existence and hold large territories (5). These antelope seem to be able to detect rainfall from a great distance and have an almost nomadic way of life, travelling vast areas in search of precious new growth after intermittent rains (2). Females give birth to a single calf once a year if conditions are good; births can occur in any month and calves are weaned after three and a half months of age (2). These antelope graze on grasses and herbs and will also take roots and tubers; they can go without direct water sources for long periods of time (8). Most activity occurs in the early morning and late evening with groups resting in the shade during the searing midday heat (5). Using their front hooves, oryx excavate depressions in the ground, which allow them to lie in cooler sand, and provide some protection against the fierce desert winds (5).
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