Not a Swallow.

       There has never been a year when I could say - "I saw my last Swallow on ~ ~ ~ ."  However, in one respect they resemble dandelions.
      Early on - you may see the odd one, or two.  Then the all appear in a mad rush and you have a season full of them.  The you rarely see any.  Then  you see none. 
       I'm wondering if this is my "Last Swallow."