I once opened a speckle that might have been 10" long if I was telling a tale, and it had 3 of these in it. I want to find out if mice follow a sort of migration from one area to another and if it is something that triggers trout to start feeding on them at this specific time , similar to the way they zone in on certain hatches while everything else floats by. Just a thought but an interesting one. Anyone ever ponder this?