There are at least two videos that the federal government has been asked to consider.
The Lord God bird is one of the 23 species that will be declared extinct by the US Fish and Wildlife Service.
In July, the agency said it was adding six months, including a month for public comment, before making a decision on whether to declare the bird extinct. The announcement said that video or photos were needed to show the bird.
Two videos of black-and-white birds were submitted in July along with extracts and extensive video presentations explaining why the contributors think they show ivory-bills.
The debate was so bitter that a book was published about dozens of "thinking errors" on both sides. The videos were called laughable by an ornithologist.
There is a video of a bird flying in front of trees and landing in a tree.
The landing sequence made me want to shout. In a video presentation made on July 22nd, Mark Michaels, founder of Project Principalis, told Fish and Wildlife officials that the group was looking for live ivory-billed woodpeckers.
Mark B. Robbins is an ornithologist at the University of Kansas. He wrote in an email that it was possible.
The other is a picture of a bird crossing a swamp and then flying away.
Bobby Harrison, a retired associate professor of photography at Oakwood University, and self-proclaimed "independent ivory-bill searcher", said that his spotting only lasted a short time, but it was unmistakable.
He noted that the bird in his video flaps its wings much faster than the pileated woodpecker, and that it flew about 150 meters before he watched it. He estimated that the speed was 35 mph (55 km/h) and that it had a color pattern.
Robbins said that a video shows that the bird is a wood duck.
Tim Gallagher, former editor-in-chief of the Cornell Lab of Ornithology's "Living Bird" magazine and co-present, said that the frame in question shows a wing in front of the body. Harrison knows what wood ducks look like because he's been photographing birds for 30 years.
On Monday, the closing day for the public comment period, the presentation was posted.
In 1944, the last ivory-bills were seen in northeast Louisiana.
A declaration of extinction was supported by the Center for Biological Diversity in a July 16 letter.
"We urge the Service to follow the best available science to the correct conclusion, finalize its proposed rule to delist the woodpecker based on extinction, and redouble its efforts so that no other species go extinct and suffer the fate of theIvory-billed Woodpecker," government affairs directorBrett Hartl
Photographs that were published as proof that the bird still lives in Louisiana were criticized by the organization.
"To be blunt, there are better and more reliable photographs of Sasquatch floating around the internet than these images of the ivory-billed bird," Hartl wrote.
The Cherokee Nation was a part of nearly 200 other groups and people talking.
The bird's influence on our cultural activities remains to this day, according to a letter signed by Principal Chief Chuck Hoskin Jr.
The Nation wants the Service to continue their efforts to keep people safe.
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