Complex sentence: This was the turkey species first encountered in the wild by the Puritans, the founders of Jamestown, and the Acadians; its range is one of the largest of all subspecies, and the heaviest reaching up to 30 pounds.
Split into simpler sentences: This was the turkey species Europeans first encountered in the wild: by the Puritans, the founders of Jamestown, and by the Acadians. Its range is one of the largest of all subspecies, with the heaviest reaching up to 30 pounds.