Here's why:
* Nest Building: Does don't pluck their fur. Instead, they pull out their own fur to create a soft, warm nest for their fawns. This is similar to how many other mammals, like rabbits, make nests.
* Purpose: The fur lining the nest provides insulation, keeping the fawns warm, and it also helps to camouflage the fawns from predators.
* Timing: Does typically build their nests a few days before giving birth.
Therefore, the fur pulling is a nest-building behavior and not a pre-birth ritual.