"Few people think about the chicken as intelligent, however. In recent years, though, scientists have learned that this bird can be deceptive and cunning, that it possesses communication skills on par with those of some primates and that it uses sophisticated signals to convey its intentions. When making decisions, the chicken takes into account its own prior experience and knowledge surrounding the situation. It can solve complex problems and empathizes with individuals that are in danger."
One chicken in particular was so clever they couldn't create a latch she couldn't open. This revelation comes as no surprise to those of us who have observed chickens closely, but it's good to see chickens getting attention in the top rung of science publications.