{"fact":"Unlike mammals where brain size is linked to olfaction, crow brains may have evolved based on visual or auditory processing.","context":"On the contrary, the relative size of the avian olfactory bulb has remained constantly smaller than that of the cerebrum, suggesting that another sensory stimulus such as visual, auditory and/or somatosensory information contributed to avian-type encephalization","source":"T. Nomura; E. Izawa, Avian brains: Insights from development, behaviors and evolution, 10.1111/dgd.12362","index":426}