A Tale of Two Birds

The perch is always better on the other side of the glass.

Vaguely-related posts:

• "Robird: False Falcons, Ersatz Eagles, and a Rambling Lemming"
  (September 5, 2014)
• "Gone for the Weekend"
  (July 4, 2014)
• "Coffee Cup, Doughnut: the Lemming's Back"
  (March 28, 2014)
• "A 'Bookish' Librarian, Art, Words, and a Rambling Lemming"
  (November 8, 2013)
• "Flying Mechanical Penguins"
  (February 12, 2011)