Goldfinches are small, colorful birds belonging to the finch family, known scientifically as Carduelis. They are commonly found in North America and Europe, often seen in gardens and open fields. Adult male goldfinches are bright yellow with black wings and caps, while females are more subdued in color, typically olive-brown. These birds primarily feed on seeds, especially those from sunflowers and thistles. Goldfinches are known for their distinctive, cheerful songs and acrobatic flight patterns. They are social creatures, often seen in flocks, and they build their nests in shrubs or trees, using plant fibers and spider silk for construction.