Roast the chicken for 1 to 1 hour 15 minutes, or until the juices run clear when you cut between a leg and thigh. Add the cider to a medium size pot and bring to a boil, reduce the heat and simmer until it thickens and is reduced by about half. Halfway through cooking the chicken, brush the bird with half of the cider. About 5 minutes before the chicken is done cooking, brush it again with the remaining cider. If desired, you can also reserve some cider for serving.