A few sketches done in a WWF natural reserve near Rome, in May, through my telescope, and coloured at home. Curlew sandpipers, wood sadpipers, and black-winged stilts. Ah- and a (female) marsh harrier.
So the colours remained in my backpack and the sketches stayed colourless in my book for a while. But I itched to give them some body and setting. So I found time and will after a couple of weeks from the actual observation. If you wish to compare, I've posted both versions ( and latin names of birds) to my blog Conci's colours.
For me it's like a little miracle every time I can bring back to life something that I've observed, and colour helps so much, though you can do excellent work without.
Pencil scans very poorly- at least on my scanner- so the effect on the web is altered by contrasting it and making it look blacker that graphite actually is- it loses its grey warmth that's so pleasant.