Q: I was working in the yard with my helper and we spotted this praying mantis eating a fly!
A: Nature at its finest!
You might also spot egg sacs on twigs in winter. I recommend you leave it in place. Mantises are beneficial insects and do no harm to people.
Little mantids will hatch from the case in April. Keep your eyes peeled for them perched on the ends of twigs nearby, looking for a nice bug to eat.