I love your choice of subject, but there are a couple of things that I would change about the shot (but only for this challenge). I think its a little too tight on the subject, and it seems to fill the frame and lessons the effect of desaturation.. The other thing to change is maybe the hue (or the title), as it looks more orange to me =). good luck!
Very nice capture with good lighting. However, desaturating the background was not really necessary to make the bird the focal point of the image. To better tie in with the challenge you could have used more background, would have made contrast between bird and background more apparent. Nevertheless, very good picture. 7