Just as animals, and some people, can feel the vibrations and energy from the Earth before an earthquake, and so respond to it, so too does the Earth feel vibrations and energy from the sun before activity, and so responds.
Here is a beautiful picture from the link you gave above.
"This picture shows hundreds of rings under a palm tree during the annularity of the eclipse from 15.01.2010 at the Conrad Rangali, Maledives. The picture is NOT my picture, but it was made by Tony, an employee of the Hotel. He made it with his Mobile-Camera."
-Love and Light-