How long can a bird remember things for?

The answer to this question varies widely depending on the species of bird. Some birds, such as crows and parrots, have been known to have excellent long-term memories and are able to remember things for several years. Other birds, such as songbirds, may only have a short-term memory that lasts for a few days or weeks. Generally, a bird's memory span is correlated with their intelligence and the complexity of their social behaviors.