There are many Goldfinches (50+) coming to my black-oil sunflower seeds; I don't have a thistle feeder. I have at least 20 Purple Finches also, but haven't seen a Pine Siskin yet this year. Purple Finch numbers have been increasing the last few years, after they were decimated by MG (along with Goldfinches and House Finches). I have not seen one bird with MG this year. Other regulars at sunflower feeders are Red-bellied Woodpecker and Downy Woodpecker, in addition to the usual Cardinals, Chickadees, Nuthatches, Titmice, House Finches and Wrens. Mourning Doves, Song Sparrows and White-throated Sparrows clean the seeds up from the ground. Most of these species come to the feeders year-round. Jean Obrist Bruners Grove Cocke Co, TN