Liz Day lday at
Mon Sep 28 00:25:56 EDT 1998

> Why is it that night after night are they not only on the same
> trees but they are on the same spot on the same trees? 

I would guess they mark the spot with scent somehow.  Zebra Longwings do
the same thing, I assumed it was by smell - ?

Liz Day   
LDAY at 
Indianapolis, Indiana, central USA - 40 N latitude, zone 5b.

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