on the part of the chickadee that is.  Window reflections are horribly confusing for birds, but I did have to laugh at this instance.  One male chickadee, very sure of himself, had claimed the Japanese Maple and lilac as his.  The problem was the Other male chickadee, the cheeky one that kept appearing in the window everytime he shifted to the lilac.  His reflection, of course, which would set him off every few minutes and send him fluttering up and down against the window, trying to drive off the other bird.  He persisted for at least two hours, until the light had shifted and the reflection vanished.

A good looking bird, but definitely controlled by instinct and hormones….