I am not sure if the way i tested the site is generally accepted or not. I tested 2 sites (available land, one in Selangor around Dengkil, the other in N9 where there were many plots within a 10km radius).
Observation was done spanning before and after rainy seasons, roughly around 3-4 months. Different times basically morning, afternoon and evening bila ada peluang(so much so about 30 days of data lebih kurang sometimes selang seminggu, sometimes consequent days). I just had to make sure before building, ada kawan gelak, but hey, its not his money right?

For documentary purposes noted the wind direction, weather, direction they came and direction they dispersed, with audio and without audio... all using my pancaindera, no high tech equipment involved (except a digital camera, itupun blur2 gambar, limited zoom n focus as seen below without audio, slightly drizzling), haha!
http://www.youtube.com/watch?v=fwPfsT7VWGUOnly after doing this did i ask an experienced old man to do a site visit, then a 'consultant'. Both okayed... so ok la kot. As i mentioned earlier, they were flying at least 100ft and higher, i believe it indicates this was a flight path or feeding ground. After digging some more, in the daerah were around 4 dozen BH's, most in commercial lots (stats from local PBT). The nearest one was about a year old, with birds flying in and out during peak times. Can't compare with the ones in Lukut/PD/Pasir Panjang... those even in the afternoon one can see the birds flying about the BH. I am confident that the area was a feeding ground as the demographics would suggest.
haha... hackwire, yes, we used to jerat burung guna getah masa kecik2 dulu, but never have i cuba jerat an owl. It might work if we can identify where they perch.
About location... camna nak kata... some may disagree, this is a personal view... i believe the birds are everywhere in Malaysia (don't include Genting highlands or highlands please ;p). Banyak tak banyak... cepat tak cepat... betul tak betul cara manage. The birds are there.
cergau, thanks for the link! nice one, very2 nice. i'll share it here;
http://www3.interscience.wiley.com/journal...ETRY=1&SRETRY=0http://www3.interscience.wiley.com/search/...20816977&page=1This post has been edited by dunsuntutmybuntut: Feb 4 2010, 02:07 PM