Man, I had a late-night face-off with a praying mantis once and if you haven't seen one in real-life.... well, I'll just say that these things are pretty itimidating.
They're really like alien creatures. I was amazed at how big it was and it stared at me with its triangular head tilting back and forth as it sized me up. I was on some scaffolding and was really afraid it was going to jump onto my face and that I might, instinctively, lurch backwards and land on my head.
These things are effin' freaky. It doesn't surprise me at all that one of these things might take out a hummingbird.