Curly caterpillars

Same old,same old! Morning spent hauling cattle home from grazings.Then off to bale more silage,then back home to swap the baler for the mower and back off down the road to mow another 20 acres.
When I was cleaning off the mower ready to come home again,noticed the top of it was covered in ladybirds and these green caterpillars. Don't know what they would turn in to,but a bit late in the season to be growing wings!