I have 6 peas. 1 cock and 5 hens. all were raised to gather except 1, the cameo. they are 2 this year (cameo I believe is 3). and have lived in a pen to gather since they were 3 months old (cameo added at 6-7 months old) we moved last year in November. so they have been in this pen for over a year and have been fine. now suddenly my favorite peahen has no crest. know one of the others plucked it. but what I don't get is why? NOTHING has changed. I know it is not my male that did it. he is a sweetheart and is very attached to this hen they were raised to gather from 2 days old. so they are very bonded. the 3 pieds were raised separately until they were all 3 months old. (purchased at 2 months old) and I doubt it Is the cameo. she is a spaz, but not dominant.