so yesterday morning we found one of our hens laying on the ground. she cannot seem to put any weight on her left leg. i have checked her foot all the way up and unable to find a break or sensitive spot but none. only when we flip her over she ccant put weight on her leg.she stands up on her good leg but not for long, then seems to find a spot and rest. she eats anything i give her and drinks. poop seems normal. i thought maybe a sprain. just hoping it isnt something worse. anyone have this problem before?