This is a really interesting composition. I like the pose of this bird, as it seems to naturally fit into the knocked-out space in the wood. I think a little adjustment might be nice to warm up the colors a little bit - it looks like there is a blue cast to the image. And the focus is soft on the bird. I've posted a workshop - hope you enjoy.
Thanks for sharing.
belle photographie de cette Sittelle du Canada ou Sittelle ŕ poitrine rousse,
excellent POV et cadrage vertical approprié, tu as su cliquer la caméra
au bon moment avec la bouffe de l'oiseau dans son bec, TFS