Contrafreeloading (CFL), i.e. choosing food which requires work over free food, occurs at a higher rate in red jungle fowl (Gallus gallus) compared to White Leghorn layers. We examined whether this ...

This story appears in the June 2018 issue of National Geographic magazine. Thousands of feral chickens inhabit Kauai, but their origin was long a mystery. Did they descend from red jungle fowl that ...

Charles Darwin first proposed that chickens may have descended from the red jungle fowl because of their similar appearances. (Pictured: A red jungle fowl) Subramanya C K via Wikimedia Commons under ...

Today’s red jungle fowl — the wild forebears of the domesticated chicken — are becoming more chickenlike. New research suggests that a large proportion of the wild fowl’s DNA has been inherited from ...