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Nest digging is an elaborate task and takes several hours sometimes spread out over several days.
It is carried out blindly using only the hind legs to dig a 30 cm deep hole,
in which it lays two to sixteen hard-shelled eggs the size of tennis balls (the number varies with population).
The female makes a muddy plug for the nest hole out of soil mixed with urine and leaves the eggs to incubate.
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