im with Greengrass3, probably worth waiting for the fallow
On a more sensible note, i've never heard of squirrels doing that but have often seen them mobbing ground predators, including me! i wonder if its a wide spread anti predation tactic or a one off like the Blackbird catching fish fry that was caught on film a few years ago. Thats the best thing about nature, dosent matter how long you study it, you will never stop learning, i love it