QUOTE(sfchung @ Nov 18 2011, 08:22 PM)
Gr Flr is OK
1st flr not really necessary to have false partition in initial stages as the birds are afraid if it is too dark.
2nd flr. having 2 in/out holes to the airwell only serve to obstruct the new birds. Light should not be an issue as new birds are usually afraid of the dark. Just low light is sufficient and is controlled by the position and size of the external in/out hole.
You should only start making partitions and blocking excess light after the birds start staying. Without any partitions, the birds are likely to make nests at the far end, away from the airwell. After they colonise the far ends, partitioning the airwell end will encourage birds to stay closer to the airwell. This partition may not be needed if birds are not bothered or the beams in the building creates sufficient false partitioning.
Might be a good idea to try open a small external in/out hole, 2ft x 1 ft at the end of the BH on the wall adjacent to the existing hole. The external in/out holes ideally should face open land and not heavy foliage.
Placement of tweeters are very important here. Each in/out hole should have eg. 4 tweeters playing a calling sound and another 4 playing the nesting room sound.
There should be no tweeters in the roving area.
Tweeters playing the calling sound , at least 4 at the entrance of each floor, aimed at the roving area.
Tweeters playing the calling sound leading the birds to the rear of the BH, running along the side of the BH, 5-10ft apart.
Your amp must be able to control the loudness of the calling sound at each level of the BH.