Saiga Mother and Calf (image) Wildlife Conservation Society Caption A saiga mother and calf. Saiga are now threatened by development in Mongolia that threatens to choke off a key migration route. Credit Rich Reading Usage Restrictions For one-time use for news stories related to this news release. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.