I found one photo that very poorly shows the undertail of the questionable dove. It is here, and the next photo is the same photo, only lightened to enhance view of undertail. There is one slightly dark feather on an otherwise white undertail. http://www.bluemelon.com/caramia/birds-intaxanomicorder#photo-2587207/T800600 Thanks for all the helpful discussion on-line and off-line regarding African Collared Dove/Ringed Turtle-Dove. Shirley Wilkerson Bryan