- News Home
5 December 2013 11:26 am ,
Vol. 342 ,
An animal rights group known as the Nonhuman Rights Project filed lawsuits in three New York courts this week in an...
Researchers have been hot on the trail of the elusive Denisovans, a type of ancient human known only by their DNA and...
Thousands of scientists in the Russian Academy of Sciences (RAS) are about to lose their jobs as a result of the...
Dyslexia, a learning disability that hinders reading, hasn't been associated with deficits in vision, hearing, or...
Exotic, elusive, and dangerous, snakes have fascinated humankind for millennia. They can be hard to find, yet their...
Researchers have sequenced and analyzed the first two snake genomes, which represent two evolutionary extremes. The...
Snake venoms are remarkably complex mixtures that can stun or kill prey within minutes. But more and more researchers...
At age 30, Dutch biologist Freek Vonk has built up a respectable career as a snake scientist. But in his home country,...
- 5 December 2013 11:26 am , Vol. 342 , #6163
- About Us
ScienceShot: How Bats Tell Friend From Foe
2 July 2010 4:56 pm
Need to signal the Caped Crusader? Try an ultrasonic chirp, not a spotlight. The same sonar calls that bats use to navigate at night may also help them to tell friends from strangers, according to scientists. Lesser bulldog bats (Noctilio albiventris) roost with hundreds of other bats but bond and hunt side by side with only a handful. In a study published in the this month's issue of Animal Behaviour, researchers watched how these bats responded to a suite of sonar call recordings. Individuals grew antsy after hearing bats from different social groups versus hearing bats they knew well; they brayed with low vocalizations called “honks” (which sound like clicks to our ears) or stretched their wings more. This ultrasonic ID may help bats to spot their chums in a chaotic roost and, like a walkie-talkie, may also help groups to communicate on hunting expeditions, researchers say.