Year Started: 8 jan 2010
Location: taiping
Size: 24 x 70
Type: open roof
Results:
3months = 15+-nests(50+-birds)
6months=  30+-nests(100+-birds)
10months= 20nests havested+ 30+-nests(180+-birds)
11months= 15nests havested+ 35+-nests(230-250birds)
I'm satisfied with my results.
p/s: my 24x70 individual bh fee=RM140k+RM20k(internal with guarantee 30birdnest in 1 year)

icecold, I think Cambodia's weather should be similar to those of peninsular Malaysia's East coast, since Cambodia's shore line is located along the Gulf of Thailand, which is essentially connected to south china sea. It is slightly located northwards so the temp should be cooler.

I think for most ppl, the problem is how to manage your BH in Cambodia, not its weather.
And you're wrong about swiftlets, they are a tropical species therefore they love hot and humid weather, you go somewhere slightly higher like Genting Highlands and you will see zero swiftlets, a lof of grass swiftlets but no EBN-making swiftlets.