BIG WHITE SILK COCOON...

A limb fell from the top of an Oak tree in my neighbor's yard and just HAPPENED to have this big beautiful white silk cocoon on it.  What are the chances of THAT particular limb falling ... just for me to share with you.  After looking it up on the internet, it seems it MAY be a type of OAK SILK MOTH.  So now we wait...I will add a photo of the creature that emerges.