Simple Goldfinch Survey this winter

What are Goldfinches feeding on in your garden?
The BTO has launched a simple survey today to try to find out.
While Garden BirdWatchers are telling us that Goldfinches are becoming increasingly common in gardens, we don't fully understand the reasons for this. How important is the food we put out or the plants we grow? Do they truly prefer nyger seed or is sunflower seed their choice treat? 
It only takes a couple of minutes for observations and data submission is online.

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