Two praying mantis. The one on the wall sconce (blue dot) appears to be eating an elder box beetle.

I heard a rustling, scraping noise and stepped out to see only a single mantis and a cactus wren hopping across the driveway with his beak fastened around a struggling lime green insect.

Impossible to see in the dark, but the cactus wren (above red dot) eye aglow, continues to dismember the mantis, gulping him down in bird-sized bites.