What a beautiful portrait! The colours are complimentary and tell a wonderful story of spring with the vibrant yellow green. Great sharp details on the bird and the foliage and a dreamy background. I can see why you took 300! I would have too hoping for a bit of action.
Personally I don’t think I would leave so much negative space on the top. Do you have more foiage to show? Or simply use a different aspect ratio to crop out 25% on top.
Hi Dan: Gorgeous perch and a great shot of the hummingbird. Another vote for taking some off the top. For presentation on screen, I don’t worry about standard aspect ratios, I just crop until it looks the way I want it and let the numbers fall where they may. If I’m printing, then I’ll worry about it because standard ratios make frames and mats cheaper.