Fig 5. Three-dimensional reconstructions and images of outer vanes from different 10^th primaries.

(A) Top view of a leading edge of C. livia domestica. The leading edge forms a distinct edge with small indentations at the interface between adjacent barbs. The white dotted line depicts the rachis of the feather in this area. Note the tilting of the barbs towards the rachis. (B) Three-dimensional reconstruction of consecutive barbs at the leading edge of C. livia domestica. The bow radiates are missing at the barb tip, exposing the outermost part of the barb. (C) Leading edge of 10th primary of L. fuscus (ventral view). (D) Leading edge of 10th primary of A. arvensis (top view). (E) Leading edge of 10th primary of Lanius spec. (top view). h.r.: hook radiates, b.r.: bow radiates.