There's a question I need the input from sifus here.
Is it possible to have 2 entrance in a BH?
Am no sifu but let me put down here my personal understanding and short experience, it is possible


Basically this is the deal, my friend's BH 24x80 3 storeys initially started with roof opening, however after 4-5 months only 2-3 spots of droppings on the 2nd floor.

After paying his place a visit I recommended him to try hacking off a side entrance on another side (for example roof ent on south side, side ent on north side). This worked as after 1 month now there is already 10 new spots of dropping in 2nd floor. Then we sealed off the roof entrance.

But the birds aren't going down to 1st and ground floor at all.

The reason might be because the stairs were designed to be near the roof opening so then can fly down.
But since the new entrance is on another side of the building, the stairs are very far away, the birds need to fly almost to the other end before they can go down. That should be ok, as long as you have a good enough opening, personnal I prefer 4x4 m , however you could settle for lesser size of 2.5x3m

I was thinking to reopen the roof opening, please dont maybe partially not fully so there will be some light and the birds can see the path down to 1st and ground floor, will this work?, please dont get yourself confused, have confident in what you are doing, a small ventilation at strategic places could assist as guide path

Added picture, the red dots are where the new droppings are located at, notice they only spread around 2nd floor but do not go down to 1st floor, let alone ground floor.

So I was thinking of re-opening the old entrance, would that work?

Sifu ayah embong,
Hello bro, me no sifu, lah,

Since the new entrance is side, in order to preserve some nesting space therefore a partition is made, if not it is too bright. As of now seems like some birds are settling down there so it should be fine. The end of the partition should have extended all the way to where the old roof entrance was. But since this renovation was done in the short time we decided to just leave that one wall, so it might look weird to yo.
then you have only one lah, after the entrance hole 12 feet away, and also another one blocking the void, try those.. if you may please send a new version as per my recommendation.

The stair void is large enough, it's 10x12ft. good enough
Looking at my picture, I just don't know how to guide the birds down to the 1st and ground floor. There's ZERO droppings, not even a tiny droplet near the void.

The birds just come in the side entrance and turn into the partitioned room. what about guiding/pulling tweerters from the LMB to void.. must use them effectively..

Yes the original entrance is better,how it could it be better? from big open top , what size please ? to a small inter room, size please ?  you think it is better?, Bro,  the birds need a smooth flow from open top to the nesting room, the inter hole already stopping that, also what size the rooving room,? bro without proper size me very difficult to image lah i and there is another partition from the small hole ? am sure your answer is about lighting abaout... bro, forget about lighting first,, concentrste on the design and flight path.. in order for the birds to go down have to make a corner to the left.. in order to do that you need to have some guide for the birds to go there, be it tweeters or by means of lighting, naturally you can use small air vent or by small buld, up to you, .. but after 5 months like I said, only 2-3 spots on top floor, Where? if i could make a good guess it is just after the first partition right? rest of the lower floors nothing. ..in order to let go down you must think of a way to guide them down?
So I scouted around the area and noticed most BHs there were facing the direction where the NEW side entrance is now.
lets get to the drawing board.. , where it is located foraging/route/central? how many in the area ? what kind of landscape structure? flight path ? sunrise /sunset where? what about the moonsoon winds? ...
after considering that then you can decide the direction of  LMB


I'm not too worried abt the partition since there are already swiftlets roosting there now. so you happy with the result, now what you really wanna do, trial and error or do it once and for all ?
Like I said, I'd don't know how to 'pull' the birds down to the lower floor use good pulling sound, strategic tweeters arragements, light assisted be it bulb or natural light. . The 2nd floor is already a mess because the where the original roof opening is wasted a lot of space. hohohhhoo, WW could tell you a strory of a person who always keep, brick, wood, cement in the BH for repairs to be made if the owner changes the mind or wake up from the wrong side of the bed..


I'll try what Ayah embong suggested to put more pulling tweeters see whether they go down.
Here's how the BH looks like before a side ent was modified.
The way the side ENT is located now, very little sunlight reaches the 1st floor, even less on the ground floor. For my humanly eyes, it is almost impossible to see on those floors. It is to my understanding that swiftlets do not like it completely 100% pitch black as well, isn't it?
you worry too much of lighting
So sifus please advise, since they're already coming into the top floor, how do I get them down the other floors?...
this is only thing you wanna do?put a mini bozooka about 1m away inside the void.. and direct that to the flying path of the bird.. [

ooo sani , salam buat anda
" I'll lend you my shoulder for you to cry on, my ears to listen to, my hand for you to hold, my feet to walk with you, but I can't lend you my heart because ....... "

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Added on June 23, 2011, 11:21 pm

---one month with over 72 posting, where do you hang out ?

---me over 3 years , daily without fail , before i even dare to speak out

---building a new farm which cost him almost 1M, you cant be serious that he will be in that club.. LOL

The more you disturb the bh the longer you have to wait. The birds will eventually go down to the lower floors, just you wait.
I would think LAL right under a straight flying path is less ideal than under a turning flying path.

The more you disturb the bh the longer you have to wait. The birds will eventually go down to the lower floors, just you wait.
I would think LAL right under a straight flying path is less ideal than under a turning flying path.