Hi Pete. I have probably a 40 foot fur tree directly behind the loft. I also have a house beside the loft that stands a good 15 feet above the loft. My birds would have trouble coming directly down onto the loft, certainly as a batch. They do land in the top of the tree or on the roof of the house. I don’t worry about it though. Up there there is no fear of a sparrow hawk getting them as they would see them coming and take off immediately. They do mostly however come straight down when called and certainly from races, especially the widowhood cocks if coming singly, they do land straight on the trap or at very worse just pitch on the house and drop down onto the loft. They lose less time doing that than they would circling once.
Unfortunately now that yours have started going up into the tree you will have trouble stopping them so probably better to not get to worked up about it. Not everyone has an ideal flight into their lofts without obstacles.
Young birds landing in trees
That's true Andy.
We each have to work around our own situation. It is in fact half the fascination of the sport in my opinion.
We each have to work around our own situation. It is in fact half the fascination of the sport in my opinion.
Greetings from the land down under. 
Blessed is he who expecteth nothing, for verily, he shall not be disappointed.
Blessed is he who expecteth nothing, for verily, he shall not be disappointed.