Among other things, avian brains have a higher density of neurons than mammalian ones! https://www.cell.com/current-biology/fulltext/S0960-9822%2822%2901221-0 h

Among other things, avian brains have a higher density of neurons than mammalian ones! https://www.cell.com/current-biology/fulltext/S0960-9822%2822%2901221-0 https://www.cell.com/current-biology/fulltext/S0960-9822%282... seems to be a primer on some of the differences.