Digital Voice Recorder

Finally I have received my Sony PCM-D50 Digital Voice Recorder bought directly from US. This recorder records voice in Wav format and the sampling rate can up to 96Khz, 24 bits. I hope to use this to create my own bird sound. Please share with me if you have any experience in creating bird sound.

Bird Flying and Playing In Heavy Rain

Is anybody wonder what happen to the bird during heavy rain? Fly to somewhere else with no rain or back to BH.

I had captured this video tape near my BH. A lot of bird enjoy flying around the tree. Seem like having their breakfast.

Additional External Amplifier for Hexagon Tweeter

All the while i have been using 1 external Amplifier to drive my External tweeters and Hexagon tweeters. The left channel output of Amp is connected to External Tweeters and right channel output is connected to Hexagon Tweeters. By doing so, I can have 2 different sound playing on same amplifier. 1 sound is external sound and another sound is playing sound.

However, after reading some blog as well as comment from my friend, is good to play the playing sound from 5.30pm to 7.30pm when the birds are about to come back to their bird house. By doing so, we can extend the life of the playing sound. Birds would not get bored easily. So I bought another amplifier just to play the playing sound or another external sound from 5.30pm to 7.30pm.

BH After 11 Weeks

After 11 weeks of operation, found more bird shits and 3 bird nest marks. But the number of birds do not seem to be a lot.

Temp and Humidity Chart Nov Vs Dec

Below is the Temp and Humidity chart from 15-Nov to 6-Dec. The average Temp = 28.8 degC and average Humidity = 77.7%.
During the 6-Dec visit, I had adjusted the humidity set point from 87% to 90%. Below is the temp and humidity chart from 6-Dec to 10-Jan-09. The average Temp drop to 28degC and average Humidity = 77%. The Temp is very stable now. But the humidity drop which is due to the sudden drop in humidity from 18-Dec to 25-Dec. No idea why.

If you notice that the humidity curve like saw-tooth shape. This is because the humidifier is run only from 7am to 6pm. So the humidity will slowly increase from 7am onward till 8pm and start dropping from 8pm onward till 7am. This is to make sure that birds have peace night and not to be frighten by humidifier.

Btw, there is some offset between the data logger and external humidity meter reading. When the humidity meter show 86%, the data logger reading only show 81%. So the actual humidity of my BH between 80% to 90% and temp = 28degC which is good for BH.

Equivalent Motorola Quality Tweeter

A lot of blog claim that they have Motorola Equivalent Quality Tweeter. But how true is that, no one now. I have found a web-site below that shows a lot of users review regarding the quality of the tweeter is equivalent to Motorola tweeter. The best thing is the price only < US1.50/each.

http://www.parts-express.com/pe/showdetl.cfm?Partnumber=270-011

GT-1005 - good for internal

3"x7" - good for external

I have checked the price and shipment costs for 100pcs GT-1005. Item cost US$128 but shipment cost US$178. Let me know if you are interested. We may share the costs.

Visit Puri Hotel, Melaka

Last week, I also took the opportunity to visit famous Puri Hotel which have swiftlet staying in the bright and crowded environment. Swiftlet feeding their baby.

Amazing.....without bird sound from amplifier, I can hear clearly the "click" sound.


I overheard one visitor said that previously this hotel is the bird house. Maybe that explain why the birds still continue staying this hotel.

More birds shits after 6 weeks

I visited my BH last week. The birds shits counts>10 spots. All of them below the tweeters. The area that I applied Aroma on Plank at Right hand side of my BH have more bird shit. So I reapplied again at the same plank and also extend to other area.

Below is the Left hand side of the BH with some new Bird shits but not as many as the right hand side of the BH. This show that the aroma that I used did improve the bird shits count.I have added about 10 fake nests made by Styrofoam which have been deeped in the aroma for 1 night. I have placed them at the right hand side of the BH.

Still not seeing any sign of Bird nest. Hope to see it during the next visit.

5 Birds Shits Spot After 3 weeks of Operation

During the last visit, we found 5 birds shits spot after 3 weeks of operation. The results meet my expectation. My target for next visit will be able to see some birds nest mark and more birds shits spot.

In order to achieve that, I have:-

1. Applied Aroma on wall.
2. Applied Bird powder on floor
3. Applied Aroma on Plank at selected area.
4. Increased the Humidity Set point.
5. Added additional Bazooka facing the North side which is the direction of birds flying back.

Hope to see more birds activity especially at the area that I applied aroma on Plank.

Temp & Humidity Chart 25Oct to 15-Nov

I have visited my BH on 15-Nov. After 3 weeks of operation, I saw 5 bird shits spots. Not bad I guess.

I also checked the temperature and humidity data. The temperature is very stable, average 29degC. The average humidity around 77% with 2% fluctuation. We did a correlation check between the hygrometer and another humidity sensor and found out that the hygrometer reading is higher that the humidity sensor. We adjusted the set point 3% higher. Will check again in my next visit. The average humidity should be increased to 80%

(click image to enlarge)