What is a blue falcon?

There is no such species known as a blue falcon in the wild. It is possible that "blue falcon" is a colloquial term or nickname for a specific type or morph of falcon that has a blue coloration, but without further context it is difficult to provide specific information.

Falcons are a group of medium to large birds of prey that can be found worldwide. They are known for their distinctive hooked beaks and sharp talons, which they use to catch and kill their prey. They are known for their incredible speed and agility in flight, making them highly skilled hunters. Some common species of falcons include the peregrine falcon, kestrel, and merlin.

If you have specific information about a blue falcon that you would like to know more about, please provide more context so that I can provide more accurate information.