The Birds have the most acute built-in GPS systems locked to the Magnetic Core. They are gone, or are chirping at night.

Of course, the woods are their refuge.

But, they "know" something is amiss, and have "checked out" this Spring. They are the most acute measure of the Magneto-Sphere.

It is eerily silent.

As well, much of the sub-stratas and layers of the Kingdom have gone missing.