Goose seems neurotic

[dhopkin2]

I have one 7 month old goose in a 30 x 40 ft wire pen with 3 chickens. I take her out of the pen and walk her around the property in the evenings. The problem I'm having is that she is now pacing the fence line rubbing her beak along the wire. I have watched her (without her knowing I'm watching) and she seems to do this most of the day. She constantly has a small sore on her beak from rubbing along the wire.
How do I get her to stop?
Is there anything I can get to keep her occupied?

 

[Pyxis]

You need another goose to keep her company. Geese should never be kept singly. She needs a friend to occupy her.

 

[Miss Lydia]