I couldnt tell with my 'scovies till the drakes started getting SO BIG compared to the hens.
Our feed store is awfull. last time I was there, they had about 75 yellow ducklings in a tank, very close to the open door and it was not a warm day. The babies were all huddled in the farthest corner, and they were trampling each other. There were at least ten-fifteen babies dead.
And so, the other chicks, being the little dinosours that they are, were eating them and it was GROSS! There heat lamp wasnt even pointing toward them.
So I turned it down, and then went and told her, and she was like"Oh, OK. Yeah" Before I had even got done talking. All I had said was "Your chicks are cold." We were there for another 20 minutes or so, wondering around, (looking for waterheater thermostats...) and she never even went out there to look at them.
Made me mad!