We have Eastern Red Cedars all over our property. 2 are right along the fence line of the chickens' yard. Which provide a source of shade. A few weeks ago, after our first windy spring storm, the wind blew little chunks of the rust all over the ground inside the yard. Kinda looked like someone threw diced carrots on the ground. Well, I had no idea what it was(at the time) and tried to get as much of it off the ground as I could. Apparently, I missed quite a bit of it and I know for sure at least my 2 roos ate a bunch of it and possibly the hens. Since I can't seem to find any info online about whether it's toxic to animals or not, I figured I'd ask here. The only mention of this rust in these forums were more in relation to gardening questions, not chicken specific. It seems a few have dirty butts last few days and the egg shell color isn't what it should be, maybe? Orpingtons and a Marans. The Orpingtons usual mid-tone brown colors look almost pink instead. This could be because I just did a deworming on the flock after the winter wetness, or is there possibly something more sinister going on with that rust stuff? If it is related to the rust, how on earth do ya treat something like that? Also, I just did a major cleanout of the run and coop. It was time for the seasonal change of bedding & deep cleaning. No one is sneezing, coughing or acting any kind of sick. Just dirty butts and a couple with runny poo. The rooster that got the most of the rust is barely pooping. He's a big boy, but pooping like a 3 month old. LOL I love all my birds and want to see them thrive. If necessary, those trees will be taken down. I like them, but I love my chickens more. Any advice or input is much appreciated!