Identify a Kansas big game species.

Elk is considered a big game species in Kansas due to its size, behavior, and the hunting regulations that apply to it. Big game species are typically larger animals that require specific management practices for hunting and conservation. In Kansas, elk hunting is regulated with permits and has specific seasons, reflecting their status as a significant game species that contributes to both hunting opportunities and wildlife conservation efforts.

Quail, coyote, and fox, while they are also present in Kansas and may be hunted, are classified differently. Quail is usually considered small game due to its size and the nature of its hunting, while coyote and fox are often classified as furbearers or non-game species, depending on the context in which they are being hunted. In summary, elk stands out as the only true big game species listed in this question, making it the correct choice.