A lovely little bird I've been fortunate to see quite a bit of recently.
In all plumages they show obvious green or yellow markings but can be told from the larger Greenfinches by the yellow bars across the mainly black wings. They have a distinctly forked tail and a long narrow bill. The male has a streaky yellow-green body and a black crown and bib.
The female does not have a black crown, or bib, and is more heavily streaked; whilst juveniles have browner upperparts, and are even more heavily streaked than the female.
For more birds from around the world, visit Dave, at WBW.