It was a long winter.  This spring I introduced male toads to the turtle aquarium and they began to serenade the female (see "Who Gets the Worm?"). The videos attached are of the males singing in the aquarium.  The noise they made went on all night long. Next morning, all toads went to the pond and 3 days later we had toad eggs.  Eggs hatched, resulting in thousands of tadpoles and, some weeks later, multitudes of toadlets moving out into the neighborhood.