A Knot Has Found Its Favorite Prey (IMAGE) NIOZ Royal Netherlands Institute for Sea Research Caption Only long-billed red knots are able to access the deeply burrowed bivalves at their tropical wintering grounds. Shorter-billed birds are forced to make a living of shallowly burrowed seagrass rhizomes Credit © Jan van de Kam Usage Restrictions This picture may only be used as illustration for this press release 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.