Please start this bird anatomy series with post #403, March 10.
A bird's wing feather sets are basic and every bird has the same groupings.
Once the basics are understood, the artist can adapt them to any species.
Below is a drawing comparing the underside of the wing with the top of the wing.
Birds have a set of feathers in the armpit region on the underside of the wing called the axillars.
This group of fan shaped feathers help close the gap between inboard wing feathers and the body during flight.
Note the various sets of coverts and structured underwing feather lining.
Why is knowledge regarding the wing and the feather groups important to the bird artist?
There is nothing random in nature, and the bird artist should know the feather groups
so well that the wing can be modeled at will from understanding and memory.
Below . . . Note the axillar group in the armpit region.
15"H 26"W 16"D
All sculpture and drawings - copyright Sandy Scott