Fearless Fowl Grow and Lay Better (IMAGE) Linköping University Caption A rooster of red junglefowl, the wild ancestor of all domesticated fowl, is shown. Credit Linköping University 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.