Finches
American Goldfinch
Spinus tristis
Nyjer is the classic finch food, but it needs small ports or it spills. Feed it on its own rather than blended into a general mix.
- Food to offer
- Nyjer
- Sunflower
- Feeder that suits it
- Dedicated nyjer feeder or small tube
- Size
- Small
- When to expect it
- Year-round; brightest in summer
- Region
- Widespread
Photos of American Goldfinch
2 imagesFeeding American Goldfinch at a glance
For someone putting out food for the first time.
What to put out
- Nyjer in a dedicated small-port feeder
- Black-oil sunflower
- Hulled sunflower
Best feeder and placement
Small-port nyjer feeder, or a small tube. Standard ports spill nyjer.
How it behaves at the feeder
Often feeds in flocks and hangs acrobatically. Late nester, so summer behaviour is about nesting rather than the feeder.
How to recognise it
Breeding male bright yellow with a black cap, black wings and black tail. Female duller yellow-green. Winter birds are brownish with bold wing-bars and white tail spots.
Often confused with
Lesser Goldfinch — Lesser has an olive back and, in males, a black cap covering the whole crown; range helps.
One thing to watch
Nyjer spoils and dries out. Small amounts, refreshed often, beat a big bag left in the feeder.
Why it nests in July and August
Most songbirds nest in spring. The American Goldfinch does not. Audubon states that nesting begins late in the season in many areas, with the majority of nesting activity occurring during July and August — and offers a likely reason: it lines up with the peak supply of late-summer seeds to feed the young.
That single fact changes how you read the bird's year. A goldfinch at your feeder in June is not breeding yet. A goldfinch in August may be feeding nestlings.
Almost entirely a seed-eater
Audubon describes the diet as primarily seeds, especially those of the daisy (composite) family, plus weeds and grasses and small tree seeds such as elm, birch and alder. Insects are taken only to a limited extent in summer, and young are fed regurgitated material that is mostly seeds.
This is why goldfinches are one of the few feeder birds where a specialist food makes a real difference. Nyjer — sold as 'thistle' but actually seed of an African plant, Guizotia abyssinica — is the classic offering, and it needs a dedicated small-port feeder or most of it ends up on the ground.
What to offer, and what to skip
FeederWatch is explicit that nyjer should be fed on its own rather than blended into a mix, because the seed is too small for standard ports.
| Food | Why it works for goldfinches | How to offer it |
|---|---|---|
| Nyjer | Small seed they can handle; the classic finch food | Dedicated small-port feeder, on its own |
| Black-oil sunflower | High energy, thin shell, taken by most finches | Small tube or hopper |
| Hulled sunflower | Same birds, less mess underneath | Keep dry — spoils faster |
| General seed mix | Usually contains filler and spills through ports | Not recommended for finches |
Irregular movements, not a clean migration
Audubon calls goldfinch migration irregular: more birds remain in the north in winters with a good food supply. Peak movement is usually mid-fall and early spring, and they migrate mostly by day.
The practical consequence is that goldfinch numbers at a feeder can swing a lot between years without anything being wrong. A quiet winter does not mean you did something wrong.
Common questions
Is nyjer the same as thistle?
The seed sold as 'thistle' is nyjer, from Guizotia abyssinica, a plant native to Africa. FeederWatch notes it is not related to North American thistle plants. The seeds are heat-treated before importation to prevent sprouting.
Why is my nyjer feeder ignored?
Check the ports. Nyjer needs very small openings; in a feeder with larger ports it spills and the birds get little. Also check freshness — old nyjer dries out and loses appeal.
Do goldfinches use sunflower feeders?
Yes. Audubon's diet description covers a range of small seeds, and FeederWatch lists sunflower as a favourite of finches generally. Nyjer is the specialist option, not the only one.