Lefebvre then took his scale a step further: Did families of birds that showed a lot of innovative behaviors in the wild have bigger brains? In most cases, there was a correlation. Consider two birds weighing 320 grams: The American crow, with an innovation count of sixteen, has a brain of 7 grams, while a partridge, with one innovation, has a brain of only 1.9 grams. Or two smaller birds weighing 85 grams: the great spotted woodpecker, with an innovation rate of nine, has a brain weighing 2.7 grams, and the quail, with one innovation, only 0.73 gram.
