Yesterday I bought 2 australorp hens,both approx one year old and put them immediately into quarantine in a large dog crate (106cm x 70cm) I put vitamins in their water because of the stress of a new home. Shortly after putting them in their quarantine crate I noticed they are both wheezing and rattling and coughing, I have put colloidal silver in their water together with the vitamins, and have given them crushed garlic to eat free choice. When I first put them in the crate yesterday they were drinking an awful lot. Much more than I've seen my other hens drink. But today they seem to be drinking more normally. They are eating the fermented feed I gave them, and today I gave them cabbage and kale leaves blended together with garlic and olive oil, which they are eating as well as the fermented feed. They slept well last night and this morning woke up and were fine scratching around in the leaves and pine shavings they have as litter. They are obviously used to foraging. As the day started getting warmer (it's 90º in the shade where their crate is) their coughs and wheezing and rattling started increasing. They are breathing with open mouths, but that might be because of the heat. I don't see any mucous on them anywhere. Also no sneezing. Is there anything else I can do to help them? How long should it be before I start seeing improvements, or need to give them something stronger (antibiotics?) Thanks for any help!