If you install those temperature and humidity sensors gadget you can easily conclude that the lower floors are much cooler and higher humidity then the top most floor.
Good example is if the top floor is 30*C the lower floor, just immediate, will be only 29*C. If you check the lowest floor, you wont be surprised that the temperature recorded might be 28*C.
Similarly with the Humidity. There will be quite a different in their readings.
The point I am trying to make you realized is that don't you think the lower floors are better for those birds?
Last night I was with someone who happened to own a BH in Rawang and he told me something might be of interest to all of you.
"Pak Harry, when I started my new BH there were lots of birds entering and some even stays at the toilet areas. There were two to be precised however after weeks gone by they were no longer there. They have left. What do you think are the possible reasons?"
I smiled and shook my head up and down and I asked him a simple question.
"How was the temperature in your BH?"
"On the higher range, above 30*C but not more then 31*C."
Are you sure that your sensor are giving the right readings?
There was another case in Klang when the owner make a beginner mistakes of not covering the top cement areas with roof.
"Pak Harry, when I first started there were at least 300 birds staying and I was so excited about it. However as days gone by, the BH internal temperature started to hit 34*C. All the 300 never return home. I begin to realized that I should have covered the top and even the sides facing those morning and evening sun. What a big mistake."
There goes another sad stories about how it have a good starts but later became a nightmare.
From my point of view any newly build BHs will experience a short term high humidity and low temperatures. However when those water in the cement walls and ceiling started to evaporate the house will slowly become dry and hot.
If the lower floors, are cooler and high in humidity, why don't you force the birds to start their home there?
To do this, what you need to do, is to block them from flying into the top most floor.
You can erect partitioning around the "LAL" pushing them to fly to the lower floor.
If you wish to prepare for an opening to allow them to infiltrate the top floor, after you have adequate number of nests at the lower floor, you can in fact used the sliding door.
This idea is nothing new and it can be used in new or old BH but your LAL must be properly located in the first place.
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