
Appearance
18.5–19 cm in length. Chestnut-brown above with narrow white eye-ring and short pale grayish superciliary. Very long chestnut-rufous tail. Uniform gray below with whitish chin patch.
Naming
The white-chinned thistletail has four subspecies:⤷ "A. f. fuliginosa" - Colombia, Venezuela and Ecuador
⤷ "A. f. fumigata" - Colombia
⤷ "A. f. peruviana" - northern Peru
⤷ "A. f. plengei" - central Peru
References:
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