In the winter season of 2015-2016 a start has been made with a color-ring project for wigeons in the Westwouderpolder in the Netherlands. Wigeons are marked with a yellow ring and a metal ring of the Vogeltrekstation with a letter-number combination (see photo) or an orange ring with a number-number combination. In the spring of 2018, some 20 color-ringed Wigeons are also equipped with a transmitter. Example of input: A Wigeon with a yellow color ring yellow T6 is entered as Y T6. So first the color Y (yellow), then a space and then the code (T6).
Photo: Kees de Jager