My chicks had this and I put them on a medicated feed, and put probiotics and electrolytes in their water. The vet gave me Corid that I gave them with a syringe in the evening for 5 days. All is good and they fully recovered!
(1) I am new to chickens, I planned on 3 and have 5.(I understand some chicken math) May 12 2020 was baby chick date
(2) I have 5
(3) 2 Buff Orpingtons, 2 Bard Rocks and a Leg horn
(4) Looking forward to eggs, but I love that they get so excited to see me and love attention and want to follow...