The Circle of the Shepherd druid gets the Faithful Summons feature at 14th level (XGtE, p. 24):
If you are reduced to 0 hit points or are incapacitated against your will, you can immediately gain the benefits of conjure animals as if it were cast using a 9th-level spell slot.
Can you gain the benefits of the Faithful Summons feature if you are in Wild Shape and your new form's HP is reduced to 0?
