sounds remarkably similar to our first livestock experience. we rehomed 3 pygmy goats from a local sanctuary specifically to start making inroads into the goat heaven we had just bought. weeds, brambles and goodies aplenty and they would not touch it but stood screaming at the gate until we gave them hay. like you we did this for the quiet life and whenever we tried to encourage them to browse it was as if they just didn't know what to do. as they were never meant to be productive and there sole job was to clear the weeds we stuck it for a year before getting rid, buying a brushcutter and some sheep.- bloody goats