Hi Arie,The wing situation is something you have picked up on and I am looking into it.I am coming up with no answers.First the actual feathers in the wing look fine when the wing is opened up.The same birds can look alright at different times of the year.With all the predators around I keep my birds inside.I think Leghorns benefit from lots of exercise and lots of flying makes the wings strong when they have very high roosts or free range. Often when I take pictures they are fresh out of the cage/pens and the wings and tails are a bit ragged and unpreened. The wing feathers are not too long and the feathers are not narrow or twisted.I wonder if it is anything genetic or if it is more environmental?Any suggestions Arie?What would you think the selection pressure should be?What is the inheritance?