Sparrow Chicks on a Hot Afternoon

The sparrow chicks are fully fledged and increasingly bold and vocal.
Our front porch location is quite hot in the afternoon (up to 103F 39.5C), so I rigged up a sunshade for the bottle birdhouse.
The chicks are panting, but seem to be thriving.
The Mom is doing all the feeding chores it seems.
I think they have about 5-7 days of development and the chicks will be off on their own.
What fun!