Sound

New ideal 2

( Playing The SOS sound )

This few week, i try to do some experiments on the sound system. At 7 pm, during the bird is coming back, i close all the external sound but switch on the SOS sound. But remember, this SOS sound should play with different tweeter on the roof top about 10 feet from the entrance.

Why ?
This can attract many bird flying on the top of the BH. I try playing this SOS until 730 pm, then i close this sound and switch on the external sound.

This is just a experiments , i still need some time to see the result. If the result is good, then we can try it at the old BH to increase the population.