Light a grill over medium heat. In a medium bowl, combine ground turkey, red onions, jalapeños and Worcestershire sauce. Mix thoroughly. Divide the mixture into four equal portions. Form four patties with hands and place on the lighted grill. Cook for 5 minutes on each side or until desired level of done-ness is reached.
Place a burger onto the bottom half of each bun. Top each with a slice of cheese, a slice of tomato, a quarter of the avocado slices, a quarter of the salsa, a piece of lettuce and the top half of the bun. Serve to hungry burger lovers.