Lots of backwards running...is she sick?

[rachel]

I have a year old RIR that has recently (in the past 2 weeks that I've noticed) started doing this thing where she puts her chest and head down and scoots backwards anywhere from 3-10 steps. I checked her crop, it's a little larger than the other birds, but not by much and otherwise feels normal. She seems to do this about every 5 minutes or so, I've especially noticed it when she's eating. Any ideas?

 

[chickflick]

I'm not really sure, but I'm hoping some one will see this and help you out....hang on, some one will come along....

 

[rachel]

If she was just running backwards and being generally weird, then I wouldn't be concerned, but it's the fact that she's putting her head and chest so close to the ground, like she's trying to swallow, or throw up? Has anyone seen this before?