While I was busy hammering nail at the roving area of a new farm few Swiftlets flew into the half completed farm.
Two of my construction workers and I were surprised to see it. I use to bring along my camera with me but this time I didn't as I need to climb up and down the ladder and hold hammer.
It seemed that birds are not afraid of us. They came in thru the entrance hole turn few rounds and headed to the nesting. All of us were shocked to see it. After a couple of minute they flew out.
Few minutes later another 6 birds fly in again this time only 4 of them headed to the nesting.There was no sound, we had just completed the roving area only. I was happy to see how the birds reacted towards the uncompleted farm.
It was a good sign and I am sure they will come back when the farm is completed.
I guess once they liked the farm the will fly in even there are humans in it.