This little one slept like this on and off for a week...now it does not do it at all. It seems like they get their 'favorite' spots sometimes, then decide to move on to somewhere else.
Here is a growth comparison photo. The scale on the two pictures might be a little off, but I tried..ha ha. They seem to grow pretty quick.
The picture on the left was taken when these guys arrived her at about 20 days old or so. The second is from today. They have been here since August 15th.