In a large bowl, mix the nutria, wild boar, crawfish, water chestnuts, mushrooms, onions, and Thai seasoning.
Brown the mixture in a heavyskillet over medium-high heat.
Remove from the heat, drain, and cool.
Place 2 ounces of the mixture in each egg roll wrapper.
Follow directions on the wrapper package for rolling and sealing the egg rolls.
Pour 3 inches of oil into a heavy, deep saucepan.
Heat the oil to 350 degrees.
Fry the egg rolls until golden brown.
Place three egg rolls in another wrapper and brush the edges of the wrapper with the beaten egg.
Fold the edges over to create a bundle.
Repeat until you have used up all of the egg rolls.
Fry the bundles until golden brown.
Slice open each bundle across the top on the bias (diagonally).
Place the egg rolls upright on a plate and serve .