一副图画，树上的鸟妈妈看着长大的儿女们飞走了，既高兴，又难过.请写一篇短文。
范文：
In this picture, a mother bird stays in her nest in a big three, watching her babies flying away. I think she must be very proud of her children,who are able to find their own food now. But she may also feel a sense of loss since they no longer need her day-to-day care as they used to. This picture shows very well the mixed feelings of parents when watching their children grow up. For my parents, things will be much easier. We will set up our family blog to post our photos,journals and audios. Once I leave for college, we can conveniently share our experiences and support each other no matter where we are. Their nest will never be empty.