Description
Adults are brown on the upperparts and pale on the underparts, with heavy streaking throughout. They have short forked tails. They have yellow patches in their wings and tails, not always visible; otherwise, they appear to be very small streaked American sparrows.
Measurements: Both sexes - length 11–14 cm (4.3-5.5") - wingspan 18–22 cm (7.1-8.7") - weight 12-18g (0.4-0.6 oz).
Read more about this topic: Pine Siskin
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