A small number of goldfinches spend their winter holiday in the lowlands around Trondheimsfjord, a very good choice I would say! I’ve never seen them in summer here .  I heard the characteristic twittering flight call this morning for the first time this winter and then saw 4 of them this afternoon on burdock (borre) seed heads next to my outhouse (see the two videos below). Goldfinches have long and thin bills allowing them to extract seeds from burdock, other thistles, sunflowers and teasel /kardeborre (Dipsacus), although they have never shown any interest in the teasel I’ve grown for them.
You can read how my growing burdock as a vegetable attracted them to my garden , at that time a rare bird in this area:
http://www.edimentals.com/blog/?p=8810
The map below shows the concentration of sightings of flocks of goldfinches in Malvik in my garden and elsewhere nearby from Malvik to Midtsandan, on the southern shores of the fjord (only flocks of more than 20 birds are plotted).