Sorry i didnt clearify in my post.. I just simply wanted to provide a reason to why certain birds may not create a mess (and the reasoning is by far what I would call scientific, and there may be plenty of more reasons) But since I know MIchael does manage the food I figured there is good odds that is the reason. I'm however not claiming that birdie mess is a reason to start decreasing the food they get, I do have some birdiemess, even if I do monitor weight and feed thereafter, and if I does feed more I may have more birdie mess, not that its really any noticible difference, but I will notice an increase of weight, especially in the zon. And if i decrease the food given i notice a drop in weight but still have a mess, but continue feeding less the mess would most likely decrease since the birds would probably start taking better care of the food given.
Anyways your original post made me chuckle

And now rereading my previouse post it kind of seems abit short (not in amount of text but in terms of thought)