Out of my flock of 10 birds, 9 laying age hens and a young roo, I have 3 brown leghorns. If they guy we bought them from was truthful, they should be around 10 months, though we've been doubting they are that old, since in the 2 months we've had them, only one has laid over the last 6 weeks, and it's been very irregular and always very small pullet sized eggs, and 1 who just started laying a couple days ago, also small eggs. Anyway, a little over a week ago I noticed one of them gurgling, beak open. Was a very hot day (though, for around here it was hot, maybe 90ish up here on the ridge where live). I posted because she seemed a bit heat worn, and I had never heard that noise before. Skip ahead to a couple days ago, and now all 3 leghorns are making the noise. It's hot again, after a couple cooler days. They 'appear' to be acting normal otherwise, eating and drinking as usual. There doesn't seem to be any fluids coming from the eyes or nose, but the gurgling persists, and of course I'm getting a little worried. It seems like the noise is coming while either breathing in, or out. None of the other birds are experiencing anything like this. Yesterday I got some sav a chick from TSC, and added it to their water. Don't know if that's a total waste or not, but it was cheap. Could something like this be a breed specific sound that occurs when it's hot? Could just the three of them be experiencing some kind of respiratory infection? EDIT: Also, all 3 seem to do a lot of sneezing during the day.