As others have said its the squirrel's. I have had them many times climbed up the tree right at your level and start to bark, then about the same time a nice deer comes in and decides to look at what the noise is all about and then next thing you know is the deer snorts and is gone. And squirrel's are not worth the cost of a good arrow. But like somebody else said when I go out pre-season to get the squirrels you dont see any, then when you deer hunt its like their everywhere. Also almost forgot whenever I see coyote I dont see deer.