A photo is fast, and captures a moment. That makes them hard to imitate, though a lot easier than just drawing in the field. I have the hardest time with beaks. Mine never seem to be the right shape, angle, etc.
I never before realized how much black and grey are on a yellow warbler.
I've been taking a drawing class, and drawing regularly for the first time in decades. I like drawing birds and flowers, and thought this class might help with that.