My birds are "penned up" lately due to the cold weather and the snow.i let them free range all last summer and the egg yolks were a nice dark yellow color,i can taste the difference in the taste now that all they eat is mash, i do feed mine organic laying mash,man that stuff is expensive,40.00 for a 50lb bag of it?.You should see them when i give them some old crusts of bread,it is like a rugby game in there,1 guy has the ball and 10 more are after him for it,it is great for a laugh to see them do that.