There are a lot of details ina bird that are really easy to gloss over or miss. Unless you take the time to proportion and draw every feather, it won’t be true.
Photos are quick and easy, but you don’t study the photos you’ve taken unless you are a real photo hound. A drawing forces you to study every aspect of the subject.
I want to be able to draw what I see well. I want to spend more time outside focused on individual entities, instead of just plowing through the trail just to get back to the car. I want to pay more attention to the structure and form of the plants and animals that inhabit my habitat.