You are almost 100% certainly seeing this instead. Very common for people to see these and think they've seen an Ivory Bill. The Ivory Bill is literally the most searched for bird in human history. It's considered birding holy grail. There have only been like two sightings which MAYBE have an extraordinarily slim chance of being credible and which were in Arkansas and in the Pearl River area of Louisiana, some of the last places of semi-suitable habitat (they require old growth forests, 99% of which are gone.
I would love nothing more for you to be right anon, and that you actually have seen Ivory Bills and they are still out there, but the likelihood is that they're gone forever, I'm afraid.
The best chance we have a finding a surviving one would be the Cuban subspecies which was last seen in the 1980s, but which, if they are alive, would have to be nesting in the higher up mountainous areas, places where there isn't significant roosting conditions unfortunately.