Photo by Carol Fassler. I am stopped this morning by the sound of a bird song very loud, very close. Four notes, expressed, then a silence. Then four notes repeated. Tilting my head up, the sun full in my face, shielding my eyes with one hand, I search the branches above, but can’t find it of course. As usual, the interlocutor is invisible to a mere human, even though the leaves have not yet unfurled from the trees and nothing more than my own inability to see obscures it. Fr