[Tweeters] Red tailed hawk with royal blue streamers on both wings?

[BRAD Liljequist]

This was a weird one - looked to be an immature RT Hawk heading north above Phinney Ridge in Seattle in thermal spiral - looked to have something royal blue attached to the leading edge of I believe both wings.  Pretty prominent, maybe about 2"x6", but could have been bigger - I was seeing from underside.  About the color of the bags the NY Times sometimes comes in.  I was wondering if it was trash that somehow got attached to the bird, or a deliberate identifier?  Seemed awfully prominent for that.  Bird was acting if nothing unusual was going on.

??

Brad Liljequist
Phinney Ridge
Seattle

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