Is it possible for chickens to have allergies? Sometimes they sneeze and have running noses. I have three white orpingtons, two rhode island reds and one black star sex link. Two of my orpingtons have it more often. It makes me think that its allergies and not a cold because there isnt anywhere they could have caught it i bought them as chicks and they are half a year old, they are laying normally, are happy and energetic, it comes and goes through out the day, their eyes are clear, they eat and drink normal, and the whole flock doesnt have it but some sneeze once or twice a day, it seemed to start when fall hit, and so did my horses and mine, its been going for about a month and hasnt gotten worse. It just doesnt really sound like a sickness to me.... so can chickens have allergies?!