Colour code
The birds of this project have a coloured flag with a 3 character inscription on one upper leg and a plain coloured ring on the other upper leg.
The color code exists consists of 4 consecutive elements: The color code consists of the descriptions of the flag and the plain ring, both separated by a slash ("/"):
flag (4 elements)
- The letter indicating the colour of the flag (1 letter)
 - The iletter f to indicate a flag
 - a hyphen ("-")
 - the inscription (always 3 characters)
 
plain ring (1 element)
- The letter of the color
 
Example Wf-ABC/G. This bird has a white flag with inscription ABC on the left upper leg and a solid green ring on the right upper leg.
colour-letters
- B = dark Blue
 - L = light green ("Lime")
 - N = black ("Noir")
 - O = Orange
 - R = Red
 - W = White
 - Y = Yellow
 



