ABIGAIL: You will not! Begone! Begone, I say!
…MERCY LEWIS: It’s on the beam! Behind the rafter!
DANFORTH: Where!
ABIGAIL: Why – ? Why do you come, yellow bird?

– Arthur Miller

The Crucible, Act 3. Abigail screams up to the ceiling of the courtroom, pretending to see a demonic bird on the rafters. The other girls follow her head. Abby blames the bird on Mary Warren. This is a ruse to whip up hysteria and undermine Mary’s deposition stating that she and the girls lied when they claimed they saw the Devil. Abby is demonstrating her power over the girls by using the satanic bird to psychologically control them.