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Yellow-breasted Antpitta Grallaria flavotincta

  • Order: Passeriformes
  • Family: Grallariidae
  • Monotypic
  • Authors: Greeney, Harold F.
Sections

Appearance

Distinguishing Characteristics

The sexes of Yellow Breasted Antpitta are alike and are immediately recognized as a Grallaria antpitta by their terrestrial habits, upright posture, long legs and short tails. Adults have uniform rufous brown upperparts, from the crown to the rump, including the wings. The lores and forecrown are dusky gray and the mostly bare ocular area is pale bluish- or grayish white. The underparts are white with a distinct yellow wash, strongest on the throat and upper breast and fading gradually to white on the sides, flanks, and lower belly. The rufous brown coloration of the dorsum extends irregularly onto the sides, flanks and crissum, giving a variable, mottled appearance.

The juvenile plumage previously was undescribed (Krabbe and Schulenberg 2003). A juvenile observed by Roger Ahlman (see Reproduction) was generally similar to an adult but differed in having the head, including the nape, almost entirely dark gray. The forecrown, however, had some sparse yellow streaking and the auriculars had small patches of rufous-brown. From the nape downwards, the upperparts were generally colored as in adults, with only sparse, irregular patches of dark gray. Below, the throat was mostly gray with only a hint of yellow plumage laterally. From the throat downward, the underparts were heavily mottled with yellow and gray, with some chestnut brown splotching, especially laterally. The soft part coloration of this juvenile was also different from that of adults. The mandible was almost entirely bright orange, extending onto only slightly-inflated rictal flanges. The maxilla was dusky gray, slightly washed with paler near the tip and distinctly orange inside the nares. The iris was slightly darker brown and the bare skin around the eye was yellowish to orangish-yellow. The legs and tarsi were pinkish gray to pinkish blue.

Similar Species

Within its range in the western Andes, there are no other similarly colored antpittas that are uniform chestnut above and yellowish below. Yellow-breasted Antpitta is most similar to the formerly-conspecific White-bellied Antpitta (Grallaria hypoleuca), which occurs only east of the Andes. White-breasted Antpitta, however, has a grayish (not yellow) wash to the underparts.

Detailed Description

Adult: Sexes similar. Upperparts uniform rufous brown, from the crown to the rump, including the wings. The lores and forecrown are dusky gray; the mostly bare ocular area is pale bluish- or grayish white. The underparts are white with a distinct yellow wash, strongest on the throat and upper breast and fading gradually to white on the sides, flanks, and lower belly. The rufous brown coloration of the upperparts extends irregularly onto the sides, flanks and crissum, giving a variable, mottled appearance.

Juvenile: Generally similar to an adult but differs in having the head, including the nape, almost entirely dark gray. The forecrown, however, has some sparse yellow streaking and the auriculars have small patches of rufous brown. From the nape downwards, the upperparts are as in adults, with only sparse, irregular patches of dark gray. Below, the throat is mostly gray with only a hint of yellow plumage laterally. From the throat downward, the underparts are heavily mottled with yellow and gray, with some chestnut brown splotching, especially laterally. The soft-part coloration of the juvenile was also different from that of adults. Bare parts colors also differ from the adult; see Bare Parts.

Molts

No specific information.

Bare Parts

Iris: dark brown; bare orbital skin pale bluish- or grayish-white

Bill: black

Tarsi and toes: bluish gray

Bare part colors differ in the juvenile:

Bare orbital skin: yellowish to orangish yellow

Bill: maxilla dusky gray, slightly washed with paler near the tip and distinctly orange inside the nares; mandilbe almost entirely bright orange, this color extending onto only slightly-inflated rictal flanges.

Tarsi and toes: pinkish gray to pinkish blue.

Measurements

Total length: 17 cm (Ridgely and Greenfield 2001, Restall et al. 2006, McMullan et al. 2010), 18 cm (Hilty and Brown 1986)

Linear measurements:

sex unspecified: wing length, 96 mm; tail length, 45 mm; bill length (exposed culmen), 25 mm; tarsus length, 50 mm (n = 1, Oniki and Willis 1991)

Mass:

sex unspecified: 63.0 g (n = 1; Oniki and Willis 1991)

Recommended Citation

Greeney, Harold F. 2014. Yellow-breasted Antpitta (Grallaria flavotincta), version 1.0. In Neotropical Birds Online (T. S. Schulenberg, editor). Cornell Lab of Ornithology, Ithaca, New York, USA. https://doi.org/10.2173/nb.yebant1.01