..... Getting closer will definitely help.....
Bird photography is very popular. And with the ever increasing quality of bird photographs, it is really hard to stand out. I think your photo is fine. It is a good photo. You've clearly got the basics down pat and the gear to do quality work. But where to from here? How are you going to make an awesome bird photo?
Getting in closer is one idea. But I also like the idea of getting further away (or in my case as a focal length challenged photographer, using a smaller focal length). That way, you can see the bird in a more environmental setting. Let's see where it lives. Is it pristine wilderness? Is its habitat under threat? What's that yellow highlight on the right hand side? Is it something interesting? Is there anything special about this bird? Maybe get in close with a wider angle lens and capture a great sunset in the back? Maybe the sun streaming through branches? Maybe some mist or fog. A successful photo is one that tugs at a some emotional string. It is small things like this that turn a technically good photo into one that makes people pay attention. (Would love to show you one of mine...but I've yet to make an extraordinary bird photo myself. It is very very challenging.)
Luckily, its not just me thinking this way. A few years ago, a photo like this - http://www.nhm.ac.uk/visit-us/whats-on/temporary-exhibitions/wpy/photo.do?photo=2831&category=48&group=1
probably wouldn't have got much attention. Look how small that bird is! And its taken with an obviously unsharp 100-400mm! On a Canon crop body! On an ancient 30D no less. What the...?? Given some of the comments above, I'm surprised this bloke hasn't died of shame from owning such clearly inadequate gear. What were those judges thinking?
Anyways, have a look at how painters portray birds. Painters are interesting because the artist can pose and frame birds in any way imaginable - So they are free to choose the most aesthetically pleasing options. It is really interesting to ponder "Why did they choose to do that?". As one suggestion, John Audubon's Birds of America (http://www.lib.umich.edu/audubon-room/pictureit-rare-book-reader
) is good to look at.