I am so very sorry to hear about your loss. I have some young juvie RIRed hens and a couple of barred rocks that are beginning to free range - they are about four months. However, I have the original two RIRed Hens that are three now. This week during the heatwave - hottest day in 33 yrs. here in North Carolina - well, I lost Henny - my best layer. Just found her dead the next morning. I had them all out around 6 a.m. hosed them off and let them free range while it was cool. Once back to their coops they all had fresh water and even that evening I double checked them again and noticed Henny drinking a lot of water . . . . .They were shaded, and I don't know much else I could have done - either/or - she was dead my the next morning. Found out since then that a lot of neighboring farmers who have a backyard flock lost a couple last week due to the heat. Now, interestingly enough - the young ones did fine and even my Silkie Flock (2 hens and 2 chicks) did not seemed bothered - always sad to say goodbye to our girls - esp. the ones we've had for 3+ yrs. Just so sad and she will surely never be forgotten. Now when we are gardening - I will always throw out melon, cuckes and tomatos. As a matter of fact, we've been doing it for years - they love to trash the scraps. Now I have seen a few flies but nothing that would concern me. I use that (sp) diatenaceous earth in their nesting boxes, and mix a small amount each week in their feed - you won't have to deal with flies nor the external or internal paracites. Usually if they leave sometihing out I rake it up and it goes to the dumpster but pertty much - they have what I call their scratch yard - mostly moist dirt - composte type that I throw the scraps out and will even throw out some Rockin Rooster scratch seed that will sprout and they love that too. However, now that I've read these responses and the fact that spoiled food can cause botulism . . . I will stop doing this as of today. Again, sorry for your loss.
C