Letting go is important. Most of the time in life we like to feel like we are in control. Of course, some people have more of an issue with this than others.
I can only imagine the feeling the little guy felt when Ciara had the pleasure to let it go. It did not fly very far. It landed in the first tree it came to and started preening. Will Shali ever catch it again or will it learn to recognize a trap. Most of us learn best from our mistakes and maybe it is so with birds too.