Another assignment at CSUMB's Science Illustration graduate program!
It was to illustrate 3 related objects (my fav kinds of herons/egrets) using any pen technique we liked. The original is black and white on bristol using a combination of hatching, crosshatching, and stipple. Photoshop used to color and label this version of it.
The hardest part was the preparation and layout. Tried so many stacked orientations, but by class popular vote I rendered the final drawing in this diagonal layout. I at first wanted to draw them life-sized, but I had no paper large enough for that...so they are scaled in proportion to each other but smaller than life-sized.
I referenced a research paper to get the typical bill measurements (citation on the image). These numbers are the midpoint values in the range of recorded bill lengths for these species.
For example, the Great Blue Heron's bill can be anywhere between about 11 and 18 cm long!Art copyright me. For display only. Please do not use without my permission.