Egg laying behavior or something more serious?

[erinangele]

I have a 23 week old EE pullet who is not laying yet. Today i noticed she is sitting, or half way between a sit or stand quite a bit. It is not the submissive squat, really more like a sit/half sit. I don't remember any of first round of pullets doing this. She also has her mouth open. She is eating and drinking normally.

Getting ready to lay? Egg bound? Something else? What do you think?

 

[imogene08]

she may be hot or she is getting ready to lay