What do butterflies remember?

what do butterflies remember?
i read about the orange black and white monarchs
who follow the same migration patterns every year
they land on the same tree in the same town
the same exact tree
scientist have not been able to identify
what makes that particular tree attract the butterflies
they have tested the trees
but can't find any markings or signatures to make "that" tree special

how do the butterflies remember?
when it was their ancestors who made the migration the year before
to travel, to mate, to lay eggs and die
and these new butterflies, hatch from those eggs
grow into caterpillars chewing on leaves til they grow fat
they build their own cocoons
and devour themselves inside
to emerge from their tomb in triumphant flash of fire
orange wings
to test the mettle of those fragile wings like steel knife blades
that cut through the sky
carving their way back into the collective minds memories
of their ancestors migration patterns
a need as invisible as hunger
following a map sleeping inside their DNA spiral until the exact moment it is called for
to plunge into the stream of blue sky
and fly and feed and fuck to guarantee the continuation of their species
like a great mysterious clockwork

is this not proof of some invisible pattern?
some great mind moving invisibly behind us all?
weaving through us all
as we travel through our lives a mystery to ourselves?

what do our bones remember?
in the stories of our ancestors?
what invisible maps are tattooed in our marrow
deeper than the minds memory
is the memory of the bones (white like teeth)

i think of my own generations
my father, my son
my mother, myself
our needs as invisible as hunger
our flight patterns,
part of a great invisible clock unwinding the time for us all