Although they are mostly good at basic arithmetic.
Scientists from the universities of Padova and Trento demonstrated chicks’ ability to add and subtract objects as they were moved behind two screens.
Lucia Regolin, an author of the study said [they] “performed basic arithmetic” to work out which screen concealed the larger group of objects.
The findings are reported in the journal Proceedings of the Royal Society B.
OH ha ha. >< I should have known better.