| This dressing follows Alfred Ronalds’ suggestion for dressing the Turkey Brown “buzz,” as a hackled rather than a winged fly. | 
Hook: 
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12-16 
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Thread: 
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Purple 
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Tail: 
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Red hackle, matching as closely as possible
  the grouse hackle 
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Rib: 
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Purple Pearsall’s gossamer silk 
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Body: 
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Embroidery thread - DMC 938 dark coffee brown 
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Hackle: 
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Grouse covert 
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Alfred Ronalds includes the Turkey Fly or
  Little Brown Dun as No. 22 in his Fly-Fisher’s
  Entomology (1836) to imitate a May mayfly:
  “Order, Neuroptera. Family, Ephemeridæ.
  Genus, Ephemera.” 
“It is to be used on
  cold days ; is a very good fly upon some waters ; and is in season from about
  the time that the March Brown becomes scarce until the end of June.* 
IMITATION. 
BODY.  Dark brown floss silk ribbed with purple
  silk thread. 
TAIL.  A whisk or two of a red cock's hackle, stained
  as for the legs. 
WINGS. Tip of the
  brownest feather from a partridge's tail, or, if well selected, a feather may
  be found on the back of the partridge. 
LEGS.  Red cock's hackle stained a good brown with
  copperas. 
To make it buzz, a
  feather from the Grouse may be tied on, in the manner shown in the imitation of
  the Green Drake, No. 28. 
* A fly is found upon
  some waters, similar in every respect to the above, except that the wings
  partake of the colour of the Iron-blue. The Little-dark-Spinner, No. 23.,
  answers for its metamorphosis” 
Although it seems like a stretch, T. E. Pritt correlates his No. 32, the Orange Partridge or Little Brown Dun in North-Country Flies
  (1886), Turkey Fly, which suggests other precedents to and heirs
  of Ronalds’ dressing, like the Brown Watchet.  
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Even more speculative is the possible connection between the Turkey Brown and a Restoration-era dressing, the Little Dark Brown. In his Anglers
  Vade Mecum (1681), James Chetham reprints the list of flies that Charles
  Cotton added as the second part (1676) of Izaak Walton’s Compleat Angler (1653). Both authors list the Little Dark Brown
  as the second fly for April and dress the “little dark brown, the dubbing of
  that colour, and some violet Camlet mixt, and the wing of the grey feather of
  the Mallard.” It's name, dirty purplish body, and emergence suggest a possible connection between this dress and Ronalds' Turkey Brown. They also suggest a distant connection to the Small Dark Dun Spider.  
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