This is the next one I painted.
The Grey Hooded Attila is found in Brazil. They measure around 20–21 cm in length and weigh between 36.5 - 51.5 grams.
Grey Hooded Attila measures 2.5 x 3.5 inches and is painted on 300gsm smooth Arches watercolour paper.
Many thanks to Dario Sanches for the reference photo.