so much activity in our part of the world once the rains arrive.........

 the busy harvester ants filling up their burrows - it's literally "making hay when the rain arrives!"

 baby animals of all kinds being born

 the busy busy dung beetle, whose eggs are inside the dung ball  (which is made by rolling along and collecting the animals dung along the ground)    http://en.wikipedia.org/wiki/Dung_beetle

 the glorious flamelilly.  Zimbabwes national flower, so holds many memories for me.........