SPECIES

Yellow-billed Tit-Tyrant Anairetes flavirostris

John W. Fitzpatrick, Andrew J. Spencer, and Kyra Leonardi
Version: 2.0 — Published July 9, 2020

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Yellow-billed Tit-Tyrant.

Upperparts are medium gray brown, faintly streaked blackish. Wings are blackish; the wing-coverts are broadly tipped cinnamon-buff (with two conspicuous wingbars). The secondaries are broadly edged cinnamon buff except at base; the innermost remiges broadly edged and tipped buffy white.

Yellow-billed Tit-Tyrant.

Forehead and face dusky gray, faintly streaked white, with narrow white supercilium. Black maxilla; mandible with a yellow base (one half to two-thirds), and black at the tip.

Yellow-billed Tit-Tyrant.

Tail is dusky brownish; the outer web of outermost feather pair and tips of remaining pairs pale. The head sides, throat, and breast are white, boldly streaked black, streaks becoming broader on lower breast and upper belly.

Yellow-billed Tit-Tyrant.

Forecrown feathers black and greatly elongated into thin, bifurcated crest overlying large, pure white crown patch.

Yellow-billed Tit-Tyrant (presumably subspecies huancabambae).

Dark brown back strongly striped blackish, more extensive white in crown, and outer web and tip of outermost rectrices pure white.

Yellow-billed Tit-Tyrant (presumably subspecies huancabambae).
Yellow-billed Tit-Tyrant (presumably subspecies arequipae).

Outer web and tip of inner web of outer rectrices dull brownish, only slightly paler than rest of tail, and somewhat less yellowish on belly.

Yellow-billed Tit-Tyrant (presumably subspecies arequipae).
Yellow-billed Tit-Tyrant (presumably subspecies cuzcoensis).

Larger than other subspecies, with darker brown and more strongly striped back, more heavily and broadly striped breast, least extensive white in crown.

Yellow-billed Tit-Tyrant (presumably subspecies cuzcoensis).
Yellow-billed Tit-Tyrant (presumably subspecies flavirostris).
Yellow-billed Tit-Tyrant (presumably subspecies flavirostris).
Yellow-billed Tit-Tyrants at nest.

Nest is a neat, shallow cup made of plant fibers, thistle down, and lichens, and lined with feathers; it is typically placed low to the ground in a shrub.

Yellow-billed Tit-Tyrants at nest.

Recommended Citation

Fitzpatrick, J. W., A. J. Spencer, and K. Leonardi (2020). Yellow-billed Tit-Tyrant (Anairetes flavirostris), version 2.0. In Birds of the World (S. M. Billerman, B. K. Keeney, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.ybttyr1.02