
I have noticed that there is a difference in colouring of Chaffinches according to the area they populate. Around here they are overall darker, whereas at Potteric Carr NR, they tend to be of a more brighter set of colours! So if you get varied shades of Chaffinches in your garden, then in all likelihood they will be coming from different areas of the country. I would appreciate any comments on this please.
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