Well.. chickens.. maybe.. maybe not.
  Other people I know that have the problem this year don't 
  have any chickens
  (but every one has barn swallws) and the mite problem DOES 
  show up when
  they migrate back here in the spring... but I didn't keep 
  close enough track to be sure.
   
  All I know is that 2 or 3 years ago, all over the East 
  coast, horses started having this
  mane mite problem. I'd never seen it before that time 
  EVER.
   
   2 years aso, horses at the Univ. of N.H. and Mass. had 
  a hugh problem  year (and they
  don't house chickens any where on the horse properties... at 
  least I
  didn't see any when I was there). That's where I got the tip 
  on Quest.
   
  Quest will work,  so I guess that's my only option 
  (it's less messy than smothering the
  little buggers with some sort of ointment..) The gelding got 
  the treatment tonite.
  Mare's mane is unaffected... no mites..
   
  Arrrg.
  Barb