Gouldian Finch died suddenly

My pair of Gouldian finches just had 3 out of 5 eggs hatch yesterday (Sept 13, 2011). This evening my male died suddenly and I have no explanation for this. I had him for just less than 2 years and he has always been the life of the party so to speak. He would sing every single day, he ate just fine, had a very outgoing personality and all of a sudden he died? I have always fed them fresh romaine lettuce and this was the only thing I fed my finches today before the male died. I also have kept their cage sprayed with Avian Insecticide and the birds were treated with SCATT as well. Please respond at your earliest convenience; I am in disbelief and heartbroken that he died this way.

Sincerely,

Erin Murphy