The coloring of a red finch is not a naturally occurring pigment. In fact, the pigment depends on their diet. If the bird had a really healthy diet it will exhibit bright red markings, whereas poorer diet would show by the colorings being more of a muted orange-yellow.
This past weekend Kris and I found ourselves back in Llano TX in a small cabin on a working ranch. Luckily for us the other cabins and guesthouses were not booked so we had the entire property to ourselves. To make things even better, the ranch-hands had the weekend off which meant other than a quick call to the owner, letting her know we arrived, we would be completely in isolation the entirety of the weekend.