One of the hallmarks of Fortean studies has always been alleged falls of frogs or other beasties from the sky. Do they really happen and what causes them? To me, the answer is simple. Like Dorothy's cottage, they are whipped up by the wind and then dropped to the earth.
One day I found my car covered in sand. Whence had it come? Investigation revealed that it had come from the Sahara, picked up by the wind and dropped in Ireland. If it can be done with sand, it can be done with frogs.
For those of you who know I don't drive, you are probably wondering why I have a car. I have an Unpaid Chauffeur in the form of my wife. If there's one thing that bores me, it is motorized vehicular transport.