Spatial memory and the avian hippocampus: Research in zebra finches

The aim of the present review is to show that spatial learning and memory is not a specialty of just a few avian species, and to describe the role of the avian hippocampus in spatial learning, memory and orientation. Based on our own research in zebra finches, we try to give an (not complete and probably biased) overview of this topic, and we also discuss the question of functional equivalence of hippocampus in birds and in mammals in that we question how far theories developed for mammalian hippocampus can also be applied to the avian hippocampal formation.

► Avian hippocampus is activated in spatial orientation, not in pattern discrimination tasks.
► Avian hippocampus is involved in learning and recall of spatial tasks.
► Brain activation differs depending on the orientation strategy of the bird.
► Homology of avian and mammalian hippocampus is supported by almost identical function.