re: Very nice site
The problem I have with the dove in the hole picture is that the hole is too perfect of a circle and the dove is very symmetrical. Seems like quite a coincidence. Coincidences happen from time to time, but they make me suspicious.
I suppose an uplifting air mass, perhaps a small local area of High pressure might make a hole like that. And the dove could be created by humid winds diverging into drier air