Dimension about 20 feet by 120 feet and 3 stories high with two monkey houses.
The building was erected some time in 2012. It was completed in 2013 and after three different consultants came to view and took action this BH was still with no nest.
It baffled my mind and there must be something unusual inside this BH.
I have seen many failed BHs and it is a very very rare when after 2.5 years there is not a single nest inside
I told myself before entering the BH I need to find out what makes those swiftlet rejected this BH in total.
You will be very surprised that this BH is with double walls and two monkey houses.
One monkey house at one end of the house and the other at the opposite end.
The external sound was okay and the internal sound was the so called BabyKing.
No rats, no cockroaches and no owl staying inside.
The ventilation holes were with those 4 inches diameter PVC pipe (gray colored).
There were about 100 internal sound tweeters on each floor.
But there was not a single bird shit spot on the floor.
I keep searching for some sign but failed to find any.
What I discovered and I strongly believed what went wrong was found on the ceiling.
Yes something to do with the way those planks were mounted.
Have a look at these pictures you can understand what I was trying to hint at:
The contractor have almost zero idea about swiftlet farming.
I was told that he was just a building contractor and not a swiftlet BH contractor or sifu.
He seems to find an easy way out by attaching the nesting planks to another nesting planks that were laid on the ceiling.
By doing so he created a gap of about 1-1.5 inches air gaps.
This can be his biggest mistake.
The gap allows air to flow from one side to the other.
If a nest is on any of these nesting planks those baby birds will die dehydrated.
It is all due to the poor nesting planks installation and the BH was rejected.
This can be a lesson to all newbies about nesting planks installation.
Tr y to make sure that there is little or no gap between the two.
If you need further clarification please don't hesitate to call this no 017 7551318