Hi I have a goldish colored hen I have only had her for 3 weeks, she has some unknown sickness. She came with a australorp which has been with her since. The other hen has not shown any sign of sickness at all except for her
odd looking swelled feet. Which I can't figure that out either. The hen
sneeze/coughs every once in a while and when I put an ear up to her I here odd noises like
gurgle sounds. It doesn't seem to be contagious or the other hen would be sick too Also
she gets this mucus type stuff on her beak every once in a while and
it stinks. I have been giving her respiratory booster and it has helped some, but what is wrong with her?
Would it be safe to add them to the flock? She doesn't seem to be contagious. Although she is highly under weight.. NO, do not add either one to your flock until you have any issues resolved.
Photos will be very helpful.
Almost all respiratory illnesses are contagious and exposed birds will be carriers of the virus - even if they never show signs of illness.
The one with the scaly foot, would like some photos, but suspect you are describing Scaly Leg Mites. Soak the legs/feet in some warm soapy water, then take a soft brush to clean the feet and legs. Dry. Apply some vaseline, A+D ointment, coconut oil to the legs. Apply oils/ointment to the legs once a day for at least 7days. Wash/soak the legs a few times in between.
The one that is "sick" with respiratory illness you mention she has mucous coming from her nose and it stinks. This could be an indication of Infectious Coryza. It could also be any one of the numerous other respiratory illnesses as well, but the "stink" is usually associated with Coryza. This is contagious. The other bird that is housed with her has been exposed.
Careful consideration and research done on your part will help you decide if what risk(s) if any, you are willing to accept if you decide to integrate these new birds into your flock.
Respiratory illnesses:
http://edis.ifas.ufl.edu/ps044
http://www.thepoultrysite.com/diseaseinfo/82/infectious-coryza/
https://www.backyardchickens.com/t/1098850/eye-infections-chicks#post_16896172
Scaly leg mites:
http://www.the-chicken-chick.com/2013/03/scaly-leg-mites-in-chickens.html