The Question and Answer section for The Glass Castle is a great resource to ask questions, find answers, and discuss the novel.
The gypsies regularly stole items from the Walls family. After one item was stolen (a pogo stick), Jeannette's mother confronted the head of the gypsy clan.... the gypsies responded to that confrontation by leaving a chicken with its throat cut...
What chapter are you referring to?
I think that would be Rex.