[Tweeters] More Migrating TuVus ...

[Jim Betz via Tweeters]

Mary,
   Although the TUVUs you are seeing -may- be "migrating" ... it is not 
a certainty.
Yes, when you saw them and even for as long as you saw them they were
moving South that doesn't mean that they were 'migrating'.  It only means
that, at that time, they were moving South.
   Yes, they might have been in migration - but simple directional 
travel does
not directly mean "migrating".

   I've lived here in Skagit County for over 6 years now.  I've seen 
-lots- of
TUVU here.  Flying in every direction, circling to gain altitude and just
transiting.  About the only thing I can say relative to migration is that
they are less likely to be seen in the Winter than in the other 3 seasons.

                             - Jim in Skagit