Life is full of oddities.  How about this, a bird's nest in a frog's mouth.  Now that is a paradox.  Absurd but true.  Ok, so it's a frog head shaped bird house.  You would think that a bird would not nest in anything that resembled a mouth.  But, every spring without fail there is a new nest inside this frog's mouth.  Maybe they don't recognise it as a mouth or maybe the parent birds like to live dangerously.  I'm sure it's the first but sometimes even people like to push the limits of living dangerously.  Some times it works out and some time it doesn't.  Just ask the people of Pompeii.  Anyway, this frog hangs just a few feet away from the kitchen window and when the babies have outgrown their nest the window sill fills up with little sparrows peeking in the window.  And then they are off on their next adventure.  So I have come to this conclusion, not all frogs are bad.