Scientists have used a robotic crab to show that female fiddler crabs prefer males who can wave off the competition. Male crabs attract passing females by waving their large yellow claws. If a female ...

Researchers have used robotic crabs to show that female fiddler crabs prefer males who can "out-wave" their neighbours. Male crabs advertise their quality as a potential mate to passing females by ...

As odd as it may sound, this is a typical female choice trial that fiddler crabs undergo at the hands of behavioural ecologists with robotic crab technology. With eyes atop vertical stalks and ...

Scientists have used a robotic crab to show that female fiddler crabs prefer males who can wave off the competition. Reporter: Jennifer Carpenter Male crabs wave their large claws Click to hear the ...