Nice.. I mostly work with digital art, on Paint Tool SAI. When I do go traditional, it's just use pencil and colour pencils, sometimes an ink pen for lines.

Are you sure those are crows? Sounds rather pleasant for crows.   We have the black-eyed crows over here too.
But we also have these little birds, which are apparently called Asian Glossy Starlings. They're black with red eyes, and can look slightly creepy. But they sound cute when they sing. OuO