Rollers smell the fear of nestlings

Rollers smell the fear of nestlings.

Many animals react to danger by producing chemical cues that can be smelled by others, which is called the smell of fear. Some bird species produce chemical compounds when threatened, such as nestlings of the Eurasian roller Coracias garrulus that vomit an odorous orange liquid when scared in their nests. Here, we experimentally explore the possibility that parents were informed about recent pr...

The Smell of Fear

For many of us, when faced with a dangerous situation, our first reaction might be to yell and scream or in some way vocally communicate the danger to others. However, unbeknownst to us, we are also likely communicating the danger in a more subtle way. Plants and animals have evolved a highly specialized mechanism for alerting their own kind to the presence of a predator, injury or stress. The ...

examining the relationship between fear of negative evaluation and communication strategies by iranian efl learners

the purpose of the present study was to investigate the relationship between fear of negative evaluation (fne) and communication strategies (css) among iranian efl learners. it was aimed to examine the differences in the use of communication strategies between speakers with high or low degree of fear of negative evaluation. the current study was a case study consisting of 10 english learners at...

The smell of danger: a behavioral and neural analysis of predator odor-induced fear.

The odors of predators used in animal models provide, in addition to electric footshock, an important means to investigate the neurobiology of fear. Studies indicate that cat odor and trimethylthiazoline (TMT), a synthetic compound isolated from fox feces, are often presented to rodents to induce fear-related responses including freezing, avoidance, stress hormone and, in some tests, risk asses...

High breeding performance of European Rollers Coracias