Monarchs and Admirals

I have been seeing lots of Monarchs along with Red Admirals all migrating.  The Monarch's have been laying eggs on the Antelope Horns milkweed as their last genetic step in ensuring the next generation will continue its northward migration.  This butterfly flew from the northern states last September, passed through Texas in October and remained on its ancestral volcanic forest wintering grounds before starting its journey north. Once the mating and eggs are laid, this 8 month survival will come to an end, and some 25 days later the next generation will resume the northern flight, only to make it part way before it too will lay eggs and die.  This is to continue one to two more times, before the next southern flight will return back through Texas and into Mexico to repeat the migration done for thousands of years.