Thanks, sarra. It's been widely assumed that the nickname derived from its breathtaking appearance, but historians now think that the name "morphed" from logcock. I actually prefer the former version of its derivation myself. :-)
Everything you ever wanted to know about the possible rediscovery (and much you probably don't) is on Cornell Lab of Ornithology's website. The lab is one of the partners in the recent searches for the Ivory-Bill.
Independent radio producers Dan Collison and Elizabeth Meister were curious about how musician of [indie darling nature Sufjan] Stevens writes his songs ... So, they introduced Stevens to the Arkansas town of Brinkley ... not far from where the ivory-billed woodpecker recently was rediscovered.
Collison and Meister spoke with people in the town, then shared the interviews with Stevens. He wrote a song about the ivory-bill, known as the "lord god" or "great god" bird because of its breathtaking appearance.
Nickname for the Ivory-Billed Woodpecker, thought by some to be extinct. The name is believed to be a corruption of another nickname for this and the Pileated Woodpecker: logcock, from their habit of foraging on rotting logs. Some think it also colorfully describes the reaction of those who first see the Ivory-Billed or Pileated, both of which measure about 20 inches (51 cm) long.