Usually we have the air ventilation holes with 4 inches diameter PVC pipe installed with an elbow and extended with about 2 feet pipe.
You main aim in to allow those air to come it but not those bright light.
Well let me show you what kind of ventilation holes were installed on every floor of this Eco Park at Kuala Rompin.
The amount of light from these holes will make the BH very bright.
Remember when it is bright those wild birds will not be happy and will not make their nests.
A very basic thing and yet the designer or the architect cannot detect it.
This was why I mentioned to the owner that most of these so called Eco-Park are there because the developer wanted to make fast money without taking into any consideration of the investors.
The architect of this Eco-park might be good in building design for human but not for swiftlet.
This kind of simple mistake can be seen in almost all failed BHs.
From my point of view all swiftlet Ecopark must be first vetted by Jabatan Veterinar before getting approval of the local council.
But this is not happening.
Even if they vetted they are also ignorance of the basic requirements.
A very sad state of affair and no body wanted to do something about it.