I have a 22 week old jersey giant hen thats really got me puzzled. She is walking around like she has a weight on her tail. She walks on her haunches almost like she wants to be mated. However she doesnt seem to be able to get up and resume normal locomotion. She just waddles around like that. Ive picked her up and felt all along her to see if maybe she had an injury or she had an egg stuck inside. To the best of my knowledge I could find nothing. She seemed find this morning. She looks fine in that her eyes are bright and she seems alert. Any ideas?