The Black Bird of Chernobyl was a mothman-like creature allegedly sighted before the Chernobyl meltdown and during the rescue of Chernobyl workers.
There aren't many sightings of this monstrous avian, though the sightings before and after are similar.
All the sightings before the disaster are practically the same: workers seeing the huge creature in the area of the power plant.
The workers say that they had dreams of a beast with a 20 ft wingspan and red glowing eyes. The sightings afterword are similar to each other: rescuers in helicopters seeing a large bird-like creature fly by. Every one who has seen the creature during that time have died.