A Canadian team have found several brain genes that make wild birds cleverer than others at foraging for food are linked with those making humans intelligent, which provides an insight into the evolutionary mechanisms affecting cognitive traits in a range of animals.

See the source article by following the link below:
A Canadian team have found several brain genes that make wild birds cleverer than others at foraging for food are linked with those making humans intelligent, which provides an insight into the evolutionary mechanisms affecting cognitive traits in a range of animals.