Hints: Kalahari mid-day siesta unwind sentry haystack Celsius

For most Kalahari mammals, mid-day is siesta time, a chance to unwind. Even the meerkat sentry takes his eye off the job.
But a sociable weaver's work is never done. They're busy constructing their own unique shelter. These giant haystacks can accommodate up to three hundred individuals and can weigh over a ton. Because they're occupied year round, thatching is an endless task. The nests are a miracle of home-made air conditioning. Air trapped in the pockets of the thatch acts as a buffer against extremes of temperature. In summer, it can be ten degree Celsius cooler inside.

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