Empty Nest Syndrome

Yesterday we got an inch of rain and I was not able to look at the nest; I filmed this from inside:

This morning, dry and sunny, I found the nest to be empty. I'm pretty sure that the two chicks fledged yesterday, or possibly very early this morning. The nest did look a bit squished but as I wrote in my last post, it was already somewhat flattened the day before the rain.
Very likely the 2 chicks, still only able to fly very short distances, are hanging out somewhere in the immense (100 feet wide) of their densely-foliaged tropical almond tree. I did spot what appeared to be a young hummer high up in the canopy,at the end of a bare twig, but he was gone by the time I came back with my camera.
In the meantime here's a vid from last summer in Baiting Hollow, showing a male hummer at a feeder with Long Island Sound in the background.