Due to the fact that I've been very ill for the past 5 days now, I was sort of rushing with the morning chores because I couldn't take the cold air on my lungs for very long and I somehow completely missed that fact that my poor Cayuga hen has a bad upper respiratory infection. I feel terrible because I'm pretty sure I've noticed her scratching at her head a lot lately, but she otherwise showed no other symptoms. Now, she sounds pretty congested and her left eye is swollen shut. I immediately ran down town and got some terramycin ointment for her eye and I had some vet rx that I've been putting on her(which seems to immediately help the breathing). While I'm sure I can find treatments if I search online, this is my first truly sick duck and I have some questions. - If I go get oral antibiotics, will her eggs still be safe to eat in the future? - Are there any natural treatments that have worked for you in the past? Please share your stories. - Are there any supplements that could help her immune system at this point? I mix some "Rooster Booster" powder with their water and they always perk up from it, but I don't know if there is anything more targeted I can use to help. - What are the odds of her going blind in that eye from something like this? - What are some causes for this? I have a smaller coop unfortunately, but I keep it bedded with pine shavings and half is covered in straw for winter and egg laying purposes. The other side has a heated bucket of water and their food dish. They then have a fenced run outside. The ventilation isn't great, but we'll be fixing that in the spring. I clean the coop every morning by scooping out the poopy top layer and spreading new shavings on top. I clean any wet straw out daily too, but change out the whole thing once a week. I do have a heat lamp clipped waaay up that is only on during really bitter cold temps at night. I have noticed that they've been spending way more time than usual in the coop due to really nasty, cold weather lately, so I'm just worried it's something inside the coop.