The world is full of unusual situations. This includes the world of nature. People ask me how do you do it. My answer is patience, anticipation and luck. I also say that being in the right place at the right time is a factor, but, that could be considered luck too. To make your photos interesting wait for interesting things to happen. Try to place yourself in the right circumstance or place to increase your chance of a good opportunity. A bird on a branch is ok, but a bird on a branch with an insect is better, a bird on a branch with an insect feeding a baby is even better. I think you get the idea.