Hello, 10 RT (Roman Tufted)gooslings arrived via P.O. Wed. by Fri. the two dark beaked,darkest colored ones were pecking the tuft and back wet of one and making it red skinned 'til I separated it. The wire cage is roomy and set up correctly-started out with growgel Plus in chick starter and Quick Chick in water. Now feeding Mazuri waterfowl starter and these two do the same to any other one they choose with a couple others mildly doing same thing. My question is, does this personality and color mean anything as far as sex of bird? Also, I only want to keep 4 ( the feed store will sell any I don't keep) . Do all males get along? My friend and I failed miserably at vent sexing them! Some are big,yellow and others are grey on the back all have nice tufts. They are imprinted and come to hand feed chopped green grass and have a bath daily. Any advice will be appreciated as I am new to this great idea of chatting. I must take out the ones I want to keep by Wed. so I am dividing the cage according to the sweetest ones!