I learned that the community prefers photos of animals and in particular of birds, where the subject is free of distracting other elements. Most of the time, such a shot is not easy to be achieved. You have to look carefully how you position yourself towards the subject and in some cases feeders or dropping food increases the chances for a good position. Nevertheless, with all the tricks and experience, having the subject free of nearby vegetation in focus is largely a question of luck.
I realized though, that when looking through the photos of my sessions that I actually prefer shots where the subject is embedded within the its natural setting. It may not always the most artful presentation but these shots not only show the animal itself but also tell stories about where the animals lives.
The photo of this Common Chaffink [Fringilla coelebs] (Buchfink in German) is a typical case. I have other shots where this bird is more isolated but I prefer this one because it also shows you how good this bird is hidden within the leaves of the tree.