We decided one nice day in late April to let Missy outside while we worked in the yard.  She didn't wander too far, stayed in the yard, exploring and stalking anything that moved.
While I was pulling weeds from the flower beds around the tree, she stretched out on the grass to watch me and soak up the sun.
I got up to get my coffee from the patio and when I looked back, she was standing there, surveying the tree.  The birds had been very busy singing and chattering and I guess she figured they were calling to her, so up she went.  It didn't take her long to get up to the crook of the tree, but when she did, she looked down and realized how high she was.  All she did was sit there meowing at me.  Lucky for her Brian was home and got his ladder off his truck and rescued her. 
I don't think she will be doing that again any time soon.  Not long after she was rescued, she went to the back door and cried to go in.  She got a drink of water, ate a little food, and then laid down in her bed and slept for the next 3 hours.  All that excitement wore her out.  Poor thing!

Adventurous kitty climbed the tree in the yard

Brian to the rescue!!!