I was not surprised what happen to Tikam Batu BH the moment the external sound was played.
The birds flew into the LMB and followed the sound until the furthest room on the top floor.
Why was it so easy for them to fly into the LMB and straight to the back of the building?
The answer lies with the way those external sound tweeters were installed.
The moment these birds passed each tweeter there will be another follow up tweeter that will pull them further inside.
The sound will be continuous this make them not to make a U turn towards the LMB.
Its how those tweeters were installed.
Just look at the way they entered and moved inside.
If you are facing problems where those birds are not entering the nesting room just call 017 7551318