I usually use French Ultramarine blue for the background blue colour but this time around I used Prussian blue as I wanted a cooler blue. I am really pleased with this one. Some interesting information about Scarlet robins is that they range in length from 12 to 13.5 cm and weigh between 12 to 14 grams.
Scarlet Robin 2 measures 3.5 x 2.5 inches and is painted on 300gms smooth Arches watercolour paper.
Many thanks to Ron Knight for the reference photo.