Free Flight Program at the Desert Museum Video Courtesy: Mike MacNeel The Raptor Free Flight Program at the Desert Museum starts in October when the weather starts to cool down. It usually ends mid-April. They do not fly the birds in the hot weather May through September. Articles You May LikeArizona-Sonora Desert Museum – The King SnakeArizona-Sonora Desert Museum – The SaguaroArizona-Sonora Desert Museum – The KestrelArizona-Sonora Desert Museum The Harris’ HawkSabino Canyon InterviewSaguaro National Park-West