Impulse control is associated with larger cognitively advanced animals like humans and other primates, but there are exceptions, like ravens. Now
a recent study shows that the great tit, a common European songbird, has a tremendous capacity for self-control - almost the same as chimpanzees.
Biologists learned this by placing food in a small translucent cylinder. The great tits that started pecking at the cylinder to get to the food failed the test as the behavior was considered an impulsive act. Those that, on the other hand, moved to an opening in the cylinder and thereby were able to access the food without pecking at the cylinder wall passed the test.