In Malaysia the monsoon season start sometime in late October up to late January.
There will be rough sea, heavy rainfall and pretty windy.
There will be lot of rainfall and flooding will be very common.
The food sources for those swiftlet will shrink and they need to go some where where the food are more abundance.
The point here is that where could be this place?
My prediction is up to the north where the weather is calmer and less rain.
The problem up towards the north the weather will be damn cold?
This year Vietnam's border with China received a heavy snow. So this might not be the right place to find food.
My bet is that they move southwards.
Maybe to Papua or Kalimantan.
One BH owner called yesterday and asked my opinion about the lesser number of birds inside his BH plus his neighbors.
"Pak Harry how come the number of birds are so little. Are you experiencing the same?" he asked.
I think it is.
If you own a BH and observed the same please confirm this yearly phenomena !!!
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