Hi, I have 4 birds that are about 22 weeks old. Over the past couple of weeks, 3 of them had what I believe to have been fowl pox (yellow spots turning black and scabby on their combs, wattles, bills and inside mouth) but they finally seem to be on the mend. The 4th, a Golden Lakenvelder, didn't have any of the spots/scabs and seemed to be the real healthy one- but as of this afternoon, has just been sitting down and not active with the others. If I pick her up, and then set her back on her feet, she just slowly sinks back down on to the ground. She still seems alert and bright-eyed. She is NOT taking a dust bath. None of them have laid yet. I checked her vent, and it seems a little more...ahem...gaping...than the others' do. At point do I become concerned about her? thanks for any help!