I've written about the mythological Thunderbird before, but it seems people in modern times keep reporting seeing this giant bird in the sky. What's going on? Is it a long-lost relative of the teronadon, thought to be extinct over 100 million years ago?
In San Antonio, Texas, there have been several recent reports of people seeing a gigantic bird.
Guadalupe Cantu III is one such witness. Ten years ago, he was finishing his paper route with a couple helpers as he had done many mornings before. However, he spotted something huge flying over his car. "We were afraid that it would come at us. So we stayed in the car till it passed this way. This thing's all feathers, all black. Much bigger than me. It looked at us. It had very stooped-up shoulders."
Although experts doubt it's a dinosaur, some believe it just might be a teratorn - the ancestors to modern day condors and vultures.
One of the most famous sightings in San Antonio was from 1976. Three teachers travelling on a deserted road had the unfortunate experience of having a massive winged creature swoop down towards them.
Witness testimony is always questionable. Sometimes, the mind can play tricks on you. I offer up my explanation for all these sightings. Here is what I believe people are seeing in San Antonio: