Colour code
The birds of this project have 6 rings. Two on each lower leg. One of the rings is a metal ring that is part of the code.
The color code consists of 7 consecutive elements:
- the letter of the colour of the upper ring on the left leg
- the letter of the colour of the middle ring on the left leg
- the letter of the colour of the lower ring on the left leg
- a slash ("/")
- the letter of the colour of the upper ring on the right leg
- the letter of the colour of the middle ring on the right leg
- the letter of the colour of the lower ring on the right leg
Example BMW/WBB. This bird has a dark blue ring, a metal ring and a white ring around its left upper leg from top to bottom. Around its right upper leg, there is a white ring and two dark blue rings from top to bottom.
colour-letters
- B = dark Blue
- G = darkGreen
- L = light green ("Lime")
- M = Metal
- N = black ("Noir")
- O = Orange
- P = Pale blue
- R = Red
- W = White
- Y = Yellow



