Alarm Call

This female Grey Squirrel was apparently 'on guard' this morning. She was sitting in a palm tree vocalizing the squirrel 'alarm' call. It's basically a 'chirp-meow'. I didn't see anything in the yard that I thought would put the 'tree rat' population in any danger but...could have been a snake, hawk, or neighbor's cat. 
*October is Breast Cancer Awareness Month please click on this link so that those who are not able to pay for a mammogram will be able to receive one for free! :)