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Chicks too can count!

Baby chicks can count from left to right

To help understand mental representation of numbers better, lead author Rosa Rugani, a psychologist at the University of Padova in Italy and her colleagues trained 3-day-old chicks to travel around a screen panel with five dots on it to get to a tasty food treat behind it. This made the five-dot panel an anchor number that the chicks could compare the other numbers to.