As Steve observed there is a lot of Fern Grass, Catapodium rigidum, probably more than you will see again in future years. It is such a diminutive grass, about 2" high from ground to top, it can take a while to notice it and then you will see it everywhere. It is only when I looked at the photo I saw the tiny 'insect'!
Smooth B. top Soft B. bottom
Oh, and the small foxtail that you saw Steve, is a marsh foxtail, Alopecurus geniculatus