No fledgling but empty nest - another failed nesting

What can I say, another failed nesting at my backyard. :( (sob-sob)
I expected the fledgling to appear on Sunday, but when I woke up on Thursday morning and looked over the window, I noticed this. The right part of the nest destroyed and ripped off with strands of nest fibres dangled down there. No chicks movement or their call, just silent.
It was normal nest with happily and noisy chicks feeding when I observed on Wednesday evening.

What caused this, I don't know. Maybe strong wind or night predator?. OGK.
Parent looking for their chicks and the destroyed nest.
Sad parent, looking their lost chicks. Still bringing food...
For two consecutive morning, the female oriole came to this tree, waiting... and waiting and calling.
She called with harsh voice, like this song recorded by David Farrow.


On behalf of the all the birds at my backyard and my family , I express sadness and extend condolences to both Oriole parent on the demise of their two oriole nestling.