I have a chick less than 2 weeks old with a swollen backside and to best describe her vent it looks like a marble/ ball is in there. I have been on top of making sure their butts are clean. I checked her this morning and she is all big in the back and has lost some fluff back there. She chirps everytime she poops and she goes a little but I don't know if she is fully relieving herself. That's all the info I have so any advice is very much appreciated!!!!