We're all so familiar with this logo that sometimes it doesn't even register as a peacock. It's looked like this since 1986, but before that, it looked like this
and before that (1957-61) it looked like this.
Before that, there was no peacock at all. The peacock was introduced to indicate the increased color programming on the NBC network. Read more here.
Posted by Alyssum Pohl at 5/14/2010