Thankyou Laura, Re the swamphen, if they aren't one and the same bird they are certainly related, in Australia the nickname (by anglers) for the swamphen is the 'bush chook'. Bush being a slang word we use for the Australian countryside, and 'chook' being slang for a hen or rooster.
I tend to work a lot in pencil, it's probably my favourite medium, it's so immediate. You may have noticed on the crow (not on the cormorant) that i have some white lines on different angles from the pencil strokes. They are eraser marks, i often also use the eraser as a drawing tool to smudge and blur to add effect.