Is this behavior egg-bound?

One of my hens is standing straight up, wings dropped, tail touching on the ground, walking with difficulty. She appeared to have trouble bending to eat from the ground. I found her this way this morning. Yesterday she appeared fine and I did not notice anything wrong. Her crop feels normal, but her abdomen is tight and firm. Do you think this is an egg bound hen?
Anne

 

Thank you for your response. I read the link you sent and it was very useful.

I massaged her in a warm bath, trimmed away the vent feathers which were soiled and clumpy. I have her in a crate, inside and it is warm in that room. I will keep her inside until she is completely dry.

I did not see an egg nor could I feel one in the vent area but I mineral oiled her to be on the safe side. She is not prolapsed. I did notice that she feels quite thin and her breast bone is prominent although she is heavy...she doesn't feel light. Her abdomen is still quite firm.

I fixed her a meal of scrambled egg, chicken, corn and her regular food. She gobbled it up and appears quite hungry.

I must say that I lost a hen a couple of weeks ago, overnight and without any signs of illness or discomfort. I had no idea why as she had not been ill or even looking ill. I did notice she was quite thin. Both of these hens are 3 years old.

Could this be something else other than egg bound? Any comments are most appreciated.