They seem to be getting their caruncles at the same rate. They do have a ridge on their bills. They both have pretty big legs and feet but do not stand far apart. They seem to trip over their own feet at times. This is why they have me confused. They both seem to have broad tails. They have some traits of both sexes it seems. Thanks for your information, I know time will tell if I find any eggs around March.On the male his face slopes up from the bill to the forehead.
On the female the transition from bill to forehead is much closer to a 90 degree turn.
But the size difference is huge. So since you said one is much larger than the other, you probably have a pair.
Also, the male tends to get the caruncles first.