One of my roos (the bigger one of two, same breed RIR) seems to be having problems with his right eye. He blinks it more than the left and sometimes it's more than a blink...closed for several seconds at a time. When it is open, there is no sign of trauma....no redness, no bleeding, no swelling, no signs of pecking..it looks like his beautiful eye. He took an extra long dirt bath this afternoon. I was concerned, but being new at this thought that maybe they do that sometimes. Could he have gotten dirt in his eye? Is he in pain? What can I do? He came right away for treats, so is not lethargic, or unresponsive....please help dear experts!