I hardly feel like anyone needs to tell you how to work from photos, or from anything for that matter. Your work is beautiful, and I could look at it all day long. But here is my answer to your question, anyway.
Regarding the use of photos:
I’ve had to accept that my style in painting is more focused in realism than not. So as much as I’d rather not need the photos, I do use them. When they can’t be my own, my most often used approach is to mash up more than one to achieve something a little more inventive than straight from the one photo.
It’s a challenge though. It means sometimes having to figure out how light and colors shift and change from one photo to another. Also, since wildlife can be rather complex, I will study my subject from many sources in order to really get to know them. I try to observe as much as I can from nature, videos, and a plethora of photo references to really understand what I’m seeing in the chosen reference. Another thing I will do, is when I finally decide on the over all color scheme (which I may work up in Photoshop if I don’t just work it out on the canvas) I will pump up the saturation in the photo to study the play of underlying colors. That part has a lot to do with my chosen approach to colors. (But again, I think you’ve got color pretty well figured out.)
Well, anyway, a good for instance of how I put all of this to use, is a wood duck that I have been working on. The actual reference photo with the pose I’m using shows more russet than violets in his nape, leading to his chest, but some of the ducks in other photos show that sometimes that area tends more to violet. So I chose to go off color from the photo. Also I chose a different perch and background for him. I’m not sure it works, which means I am belaboring a bit much over it, but I am also learning more each time I struggle through this process. I hope one day that my work will look seamless and that all perspectives work together as if that composition actually once existed in that one little moment.
Hope that helps.
Full disclosure: The pencil work that I have shared on this forum was mostly done straight from the photo references as I considered them just practice to learn the medium until I could work up to more “designed” pieces.