Some small birds spiecies cooperate during the winter when searching for food. What are the pros and cons with this behavior? My solution: Cons: They have to share the food, it can be some rivalry => leads to fights. Pros: Easier to find food, when more searching, in the winter it might be more difficult to find food for isntance. Cooperating it is also easier to find enemies. So why excatcly does different species cooperate, can they find food at different places because they are different species? Can you find more pros and cons?