American Goldfinch (Spinus tristis) July 22, 2020 1967 × 1574 American Goldfinch (Spinus tristis) American Goldfinch male perched on backyard thistle feeder June, 2020. East Hampton, New York. Open woodlands, weedy fields. Likes thistle down for nests and thistle seeds as food. Waits until thistles bloom and set seed before nesting in June. Year-round.