Houbara Bustard Eggs (IMAGE) Helmholtz Association Caption These are eggs of the Houbara Bustard. In a breeding experiment with Houbara Bustards scientists have concluded that visual stimulation from attractive males positively affects brooding females, improving offspring growth. Credit Photo: Adeline Loyau, UFZ/CNRS Usage Restrictions None License Licensed content 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.