Great sketch! It is true that details are hard to capture on moving subjects. Maybe we can work on getting an impression of the moving bird, then use photos to help with accurate details. Good luck!
Drawing from the photo gave me time to work on the details of flight feathers, branch, twigs and leaves. The challenge was drawing what I see rather than what I expected. For instance the light and dark of the leaves, twigs and feathers. The bird in the photo has the head turned slightly toward the viewer. I drew it more one dimensionally.
I have always enjoyed bird watching and drawing. Recently I took a water color class. I have found a wonderful sense of peace spending time outdoors observing nature and a sense of timelessness while drawing and painting. I hope that taking this course will help me develop a new habit!