Drawing a realistic perched hummingbird lets artists showcase the bird’s tiny details. This idea allows for a closer look at the hummingbird’s vibrant feathers and delicate beak.

Sketchsoft describes its Feather iPad app as a "next-generation ... update adds new brush styles and patterns, geometric primitives for drawing on spheres, cylinders, cones, or rings as a base ...

We don’t always appreciate how much geometry can be found in nature ... with their basic shapes breaking away to reveal feathers and fur.