Pretty. In spirit, it reminds me of the purpose behind a Japanese haiku - to capture a moment in time and exalt it. You've done this with your lovely poem, and I'll be reminded of your poem next time I spy a blue jay.
The character needs to remove the window, or get outside, or have someone help her/him get outside. As beautiful as the bird is, it is separated from the viewer. Obviously the bird doesn't understand why, on such a lovely day, one would be inside.