I am from the Philippines and have been raising native chickens for years. Just this year, I started acquiring heritage chickens (RIR, BA and BPR). Lately, my flock has been hit with infectious coryza and the young ones are badly hit. I understand that this is caused by bacteria, thus, antibiotics are needed to treat the flock. However, I am also looking for home remedy or other alternative treatment. Any suggestion or info will be highly appreciated. Thanks!