New Bird...Carolina Wren or Bewick's Wren

I've identified a new bird visitor to my yard. It's either a Carolina Wren or Bewick's Wren, I believe, and just started seeing it the past few days. Today, I video-recorded it briefly with my Bushnell binoculars/camera and scrambled to get my better Canon camera, but it flew off to another part of the garden before I could get a decent-quality shot of it. It was sitting near the top of a flower stem. Haven't seen it near the feeders yet. I have discovered why now. It apparently only eats insects. It's hard to tell which of the two Wren species it is.

It's pretty cool discovering a new bird species and looking up all about them on the 'net.