I just lost my 2nd Orpington this morning.. Exactly the same thing happened as the first one.. One minute they were running around, being normal healthy chickens, then the next she just dropped. They both died in less than a minute. Both were getting their waddles in, so not sure that it could be egg binding. What could it be? There are no symptoms of anything wrong. They have been eating and drinking normally, It has been in the 90's here, I give them frozen grapes and watermelon to cool them off, as well as ice in their water.. they free range with me in the afternoons. The one I just lost is 20 1/2 weeks old. If anyone has any ideas, I would love to hear it.. I don't want to lose any more!!!