I don't have a CYV but can say that our birdcage blocks little of the sun unless the sun is really low on the horizon. The sun is generally intense enough that we put on sunblock when using the pool. There is one disadvantage that I can think of for having the birdcage if you like to have live flowers within the screened area, and that is pollenation of those flowers. The screens would keep out our little pollenizer buddies.
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ARE VILLAGERS OLD OR ARE THEY RECYCLED TEENAGERS
At my age rolling out of bed in the morning is easy.
Getting up off the floor is another story.
"SMILE... TOMORROW MAY BE EVEN WORSE!"