butterfly migration

[Liz Day]

>  concerning the definition of the terms "migration" and "dispersal" 
> 
> I think that when we have a more or less unidirectional movement (Red Admirals
> or Monarchs), it's migration. 

I like this idea.  And thank you everyone who has replied about moths that
migrate. 

Liz Day   
(and parakeet Tweeter-Boinger, bent on destroying the world by nibbling it)
LDAY at iquest.net 
Indianapolis, Indiana, central USA - 40 N latitude, zone 5.