We presently have a nest with at least 2 Cardinal chicks right outside our kitchen window. My wife watches them like a hawk (but with better intentions!)
With 2 cats and free range chickens here, those chicks better not fall out of the nest. At least the bush the nest is in is all thin branches, so, the cats can’t climb up there. But, still... :-(
If it is not too disruptive, below the nest halfway to the ground put up an open inverted umbrella. Short handle. Or something similar. If someone falls out they will be caught.
~20 % chance of rain this morning said NWS (starting around 6 am it was lower) and we’ve already had 3x HEAVY thundershowers. At least the ground had dried out “some”.
It looks like this ramps up for ~ 3 days and then hopefully tails off.