Kittens - 3 weeks old

The kittens turned 3 weeks old today so here is an update and pictures. The kittens have grown at warp speed. The black one is over a pound and 2 of the yellows are just under 16 oz. One of the yellows is about 13 oz. Their motor skills are improving and they play and attack one another. We moved them to a new box that is much larger and so far mom has left them there. The other night about 2 in the morning Martha was awakened by a kitten cry and discovered Patches moving the black one into our bedroom. She stopped her and moved the kitten back to the original box, all the time explaining to Patches that she could not bring them to the bedroom. All was well for a few minutes and then she tried again with the same result. Once again Martha intercepted. This time she left them where they were. So Martha made her a new box that has more room and we are trying that to see if it helps. Here are some pictures.