When I was doing bees about 25 years ago on another island I read somewhere on how to be sure you got the queen when you took the bees from a hollow tree. I think I read it in the "Hive and the Honeybee" as that's the only book I had. No longer have it tho. They stated that by drumming the tree all the bees would move up and out the top by slowly tapping the tree with a hammer. First you cut the tree from above the hive until you reached the top of the hive. Place a box with a hole in the bottom over the hole in the tree so the bees would go up into the box. Drum the tree and smoke the lower entrance hole until you have a LOT of bees in the box. Slide a queen extruder in between the tree and the box and wait for the bees to go back down. After a while check to see if the queen is trapped on the extruder. If so drum the tree moving as many bees as possible back into to box. Close hole and take the box of bees and the queen and put into a super with frames. I attempted to do this back then but didn't have much success. I have the same/similiar situation now with a coconut tree that has a upper and lower entrance. I can't cut the tree but I'd like to try getting the queen and bees. Maybe use a wire funnel on the top entrance and watch for the queen??? Anyone done this or know anyone that has done so??