Also known as the “Wild Canary,” these birds don’t nest until weed seeds, typically thistle, appear, which happens about mid-summer. They are the latest nesters in North America, which is probably why they typically raise only 1 brood per year. The nest photos show their “signature” nest with thistle and cattail fluff woven into it.
The American Goldfinch eats only seeds and they start their babies out on a seed diet very early. This is quite rare among song birds.
We have quite a number at our house as they love, love, love the bird feeders we have up in the winter. By the time they change color to their beautiful yellow we have so many that it’s like Easter eggs all over the yard.