A Bird's Sperm Call Caught in the Act (IMAGE) Netherlands Institute of Ecology (NIOO-KNAW) Caption This sperm cell carries a whole community of bacteria. What will their impact be? Credit Melissah Rowe Usage Restrictions Only to be used when connected to the contents of this story 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.