After crows fight they touch and preen each other to make up


Francois Gohier/

Crows may sound unpleasant and represent a living symbol of death, but it seems a murder of crows has a soft side – even when it is made up of relative strangers.

Crows belong to a group of birds called corvids, known for their intelligence. They are loyal birds, forming long-lasting social relationships with specific individuals.

To find out how they form new relationships, Miriam Sima at the Max Planck Institute for Ornithology in Germany, and her coauthors studied crows that were unfamiliar to each other. They wanted to see how the crows would react to scuffles amongst

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