The region also lies along important migration routes.

That means residents can encounter a remarkable variety of birds, including species that may not be familiar to everyone who lives there.

Large birds of prey, vultures, herons, pelicans, cranes, and other substantial species can all create unusual silhouettes in the sky.

From a distance, a bird’s proportions can also become difficult to interpret.

A broad-winged bird gliding with its wings fully extended can look dramatically different from the same animal perched on the ground.

The angle of the wings can make the animal appear wider.

Bright sunlight can erase details.

And when a bird is silhouetted against the sky, its body may disappear into a single dark shape.

To someone watching from the ground, the result can look almost prehistoric.

Then the Stories Started Growing

As the reports circulated, so did the descriptions.

A bird became an enormous bird.

An enormous bird became something resembling a giant eagle.