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Spinus tristis
The American Goldfinch is a small finch, 11–14 centimeters (4.3–5.5 in) long, with a wingspan of 19–22 centimeters (7.5–8.7 in). It weighs between 11–20 grams (0.39–0.71 oz).[11] Among standard measurements, the wing chord is 6.5 to 7.8 cm (2.6 to 3.1 in), the tail is 4.2 to 5.1 cm (1.7 to 2.0 in), the culmen is 0.9 to 1.1 cm (0.35 to 0.43 in) and the tarsus is 1.2 to 1.4 cm (0.47 to 0.55 in).[12] The beak is small, conical, and pink for most of the year, but turns bright orange with the spring molt in both sexes.[13] The shape and size of the beak aid in the extraction of seeds from the seed heads of thistles, sunflowers, and other plants
The American Goldfinch prefers open country where weeds thrive, such as fields, meadows, flood plains, as well as roadsides, orchards, and gardens. It may also be found in open deciduous and riparian woodlands and areas of secondary growth.[20] This habitat preference continues during the spring and autumn migrations
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