I like the soft muted colors for it really gives this photo composition a look & feel of an old style painting. I think it is the colors but also the sweep of the 'weeping' tree branches (that are like brush strokes) that gives the impression of an oil painting. Normally I would prefer the main elements (the tree and the birds) to be in sharp as a tack focus but there is something to be said for soft focus and even blur (as I have recently learned from the impressionism challenge)that can add to the mood & feel of the capture. The soft colors and soft focus projects the feel of some soft breezes during a very warm summer day. The tree with it's sweeping branches is where the birds take a moment to rest under the cool shade the tree provides. Now I do have some small critiques in which I think that this capture could be better. The first is to include the tree in it's entirety. The top portion is chopped off. And I have to agree with another commenter's observation that the black frame just doesn't compliment the composition. Either have none at all or look for a softer tone to compliment the soft, muted colors in the composition.
I really like the peacefulness of this and the soft colors. The only nit I have with it is chopping off the top of the tree. I do realize that to include it makes the birds even smaller, though. The processing is lovely.