Well, you can imagine our surprise when we looked over and found Signal no longer sitting on his mat. He had scooted himself forward and was now sitting on the floor in front of it. The pillow wouldn't have done a darn bit of good had he fallen backwards, as it was now a foot behind him. Eeek! Our little boy was mobile!
I put him on the mat again this morning to see if he would repeat his fancy feat. And indeed, he is now officially a bum scooter.
Here he is on the move. (Please watch it with the volume down if you don't want to hear my awful, high-pitched baby voice.)
It's so sweet. Lucky for us, at the moment he's ridiculously slow, so we're in no danger of him getting away. But I have the feeling that this is only the beginning of a very mobile summer for Signal.