The main reason behind this is Trichomonosis a parasite disease and one of the main causes of this (according to the experts) is our dirty feeders.
I've always had really good numbers of Greenfinches at my feeders but this year I haven't had any which is a bit of a worry. I do clean my feeders perhaps not as often as I should but not to have a single Greenfinch visit my feeders must show that the BTO survey is pretty accurate.
I don't know what the answer is to stop the Greenfinch decline but it would be a massive shame to lose one of our charismatic and beautiful garden visitors.
|male and juvenile Greenfinch on my clean feeder|