Pond Boss Forums GENERAL QUESTIONS Wildlife Management New cypress tree snacks...upcoming dead animal

This area of NW Central Texas is apparently odd. Birds that don't belong such as Roseate spoonbills, pelicans (4mi away), cormorants, wild variaty of ducks and now something that ate my young cypress trees.
I'm guessing nutria. Any other ideas what this may be and how to kill this critter?
Both are chewed off underwater.
Can a turtle do this? We have softshells.