Very nice picture. I would opt for a B&W approach in this picture but it's okay the way it is.
The problem with this picture is the presence of two contrasting themes which, for me, I find quite distracting. The hungry bird in the lower part of the frame and the lonely bird staring at the outside world from which he is "caged" are the themes that I can extract from the picture. I'd focus on one of the theme rather than mixing both in the same picture. Though you can interpret this picture something like: the hungry bird down there is hungry and the other bird is ignoring him since the fact of being "caged" when it is so obvious that it is futile to cry for food.
I'd suggest focusing on any of the theme you want to highlight; if it is to express the feeling of loneliness I'd suggest a horizontal framing with more negative space on the left handside of the frame with the bird staring in that empty space, and at the same time trying to exclude the other bird down there; OR if you opt to give a sense of hopelessness and hunger, I'd suggest a vertical framing to include both of the birds, while keeping the space on the left to minimum, that's how I think you can improve this picture.
By the way, nape dah tak ambik gambar portrait? Bila ko ambik gambar portrait memang power, terutama sekali yang B&W. Ni ko tgh buat remedial banyak jer mase terluang nak ambik gambar.
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{K:163889} 4/4/2006