@CapricornFarm Deb I love your coop... I wish cattle panel coops were my option...
For what its worth..... Roosting in trees is not the best option... Bobcats will go right up a tree for take out... Never mind owls.
Lost guineas to both... The way I got mine to coop up was to start making a call of somesort or noise when you feed in the evening.... I Hollered Treat Treat Treat and they knew I had either millet or scratch... You could hear them muttering and jostling even way up in the rocks.. pretty soon as a flock they would fly up to the top of the house to see if i really meant it.... Then they would land in the yard and march in the coop muttering as if to say ITS ABOUT time.
Id scatter the feed a bit till the last one came in then give the rest and shut the door.
Unfortunately they are very unlike chickens... but then they havent been domesticated as long. You will have to do this every night.
The ones that stopped going up into the tree probably iether had a close call up there or a predetor took one up there.... have you done a head count?
deb