Outdoor Oklahoma is a magazine of the Oklahoma Department of Wildlife Conservation. They occasionally buy freelance articles, and accept reprints. According to their guidelines, they pay $300-450 for features (over 1,500 words), $125-250 for shorter articles (500-1,500 words), $55 for sidebars and “Off the Beaten Path” articles, and $15-$50 for images and graphics each. Details here.