Ottenby Bird Observatory, Sweden
Here’s a photo with a slight nerd warning, primarily for those of you deeply into this subject…
During the autumn we caught 12 Chiffchaffs at Ottenby Bird Observatory, which we have recorded as Siberian Chiffchaffs ‘tristis’. Several were very typical but also some best described as ‘fulvescens’ (western tristis)- showing slight presence of yellow, and perhaps a trifle more olive above. The image is a rather amusing compilation, and gives a quick impression of the variation.
Click on to see closer/ larger size.