noticed hen had a large bulge on left side of chest 2 days ago. she seemed fine and it did go down some. but today she still is eating but the bulge is large to the left and she is limping on her left leg, I this bulge an impactef crop? It is not in the center but off to the left. I just started feeding my chickens scratch this last weeeK Coincidence or cause? Advice please. Hens are 6 months old? Also made oyster shell available last week because she laid her first egg and the shell was soft. Have not seen another egg from her?