I have 25 RIR chicks that are 2 weeks old. Yesterday I had 1 die from what I finally figured out was some type of constipation. The chicks hold themselves in a squatting position and make a loud fast chirping sound I have never heard before. I have raised chicks for 7 years so I know the noises chicks make. Today I noticed 2 more doing the same thing. Their vents are working hard to push out their poo but it’s like a ball too large for them to pass. I don’t want them to die. I have gotten so I softly help them pass it by gently squeezing back by the vent, just so they don’t stay bound up. Their water has probiotics and today I started wetting the food into a slurry hoping it will pass easier. Has anyone ever had this happen before? Most everything I have read has talked about a single chick. I have had 3 in this batch. I’m wondering if it is a genetic thing? Any thoughts or words of wisdom?