Believe it or not eye, sword, sword eye and herl feathers are not technically tail feathers; they are body plumage.  These are the true tail feathers from a peacock and they hold up all of the other feathers when on display.  How about these for painting on or a 50 cm+ quill pen?

Approximate length: 50 - 55 cm
Species: Male Peafowl
Price
NZ$20.00
Feathers in Pack