They are diurnal, but will sit outside their burrows at night in late summer because their thick fur and pre-hibernation fat is too hot.
(They; are; diurnal) (They; will sit; outside their burrows; T:at night; T:in late summer; because their thick fur and pre-hibernation fat is too hot) (their thick fur and pre-hibernation fat; is; too hot)
They They their thick fur and pre-hibernation fat
are will sit is
diurnal
outside their burrows T:at night T:in late summer because their thick fur and pre-hibernation fat is too hot
too hot