I enjoyed drawing from the photo as it provided unlimited time to study the subject. Overall shape came relatively easy. Proportion and perspective were a greater challenge.
I definitely would not have noticed a lot of the more subtle identifying features had I not been asked to draw the warbler. This would make a big difference when nature journaling as I am s rank beginner at drawing and only a moderately experienced birder. I can see how nature journaling will give me a healthy boost up the learning curve.