The swallow nest pictured in today's Washington Post Home section is 
a typical Barn Swallow despite what the article says.  A Cliff Swallow nest 
would be domed and you couldn't look down on the nestlings.
      Also the nestling on the right looks like a runt and probably didn't 
survive.  It hatched after the other ones and probably lasted this long 
because of the small number of nest mates.

Paul Woodward
Fairfax City, VA