PBS
Pbs: The Life of Birds: Bird Brains
Learn about the intelligence of birds. There are many examples to illustrate communication, use of tools, and general resourcefulness that many birds show.
Eastern Kentucky University
Eastern Kentucky University: Ornithology: Nervous System
This site, created by a biology professor at Eastern Kentucky University, provides an overview of the brain and nerve senses of the bird.
Earth Life
Earth Life: A Bird's Brain and Nerves
Learn about the nervous system of birds. Written at a reader friendly level.