A well-known correlate of working memory is sustained neural activity that bridges short gaps in time. It is well-established in the primate brain, but what about birds? They have working memory. (In fact, there is a lot of classic work that detailed the behavioral characteristics of working memory in pigeons).
Miller Lab alumnus Andreas Nieder and crew trained crows to perform a working memory task and found sustained activity in the nidopallium caudolaterale (NCL). This is presumably a neural correlate of the crow’s visual working memory.
Now if crows could only pass that causality test.
