(Portland, OR)  --  The ringleader of the group that took over an Oregon wildlife refuge will appear in federal court today.  Ammon Bundy and seven other defendants will be in a Portland courtroom for detention hearings.  Bundy and his followers are accused of threatening community members and calling on the public to bring weapons to their protest.  The defendants were arrested earlier this week during a traffic stop in which one protester was shot and killed.