Just spoke to Bev, she missed it too and she's there..lol. She bent down to get something and looked up and Cassie gone...looks like she fooled us all. Not sure if she flew or fell but she is safe and is not hurt so that's good. She is on the lower roof below and there is shelter there from rain if needed. Bev is on her way home now.
She said mom and dad have been tryiing to get Cassie off the nestbox roof because a storm is coming. Stay tuned..for Bev's report. I'm relieved now!