yes m8 i think your right there,,ive got one and think the venterlation is crap,,when i went on the darky i had a bad case of respo with the young birds,,,ive made some round holes along the back in every section but i dont think its made,alot of difference,,,i had a top fancier from out of town come round,,he went in for 2 mins came back out and new strait away the venterlation was,nt right,,,it was comming in threw the front louvers on each door and just swirling round in one spot and not going out the back,,,you can still see the plumage in one spot on the loft roof were it settle,,,none at all at the back,,,a few lads told me its were the loft is positioned as well,,which way the wind blows kind of thing,,,i was going to put chimneys in or fans but carnt be arsed at this moment in time,,,i did put a little avairey on the side for a bit of fresh air in the day but when there darkened of again the trap door will be closed,,,picture,,,,,look at the fence behind the loft,,,that will stop alot of air flow without a dowt,,,but its stopping next doors mad alsation from comming in and eating me,,,, :B :B :B :B :B :B