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- Tunchiornis ochraceiceps
10 – 13 centimeters/4-5 inches
9-14 grams/.33 - .50 ounces
T. o. ochraceiceps, the nominate male of the species, will exhibit a crown of brown with yellow shades with the area over the bill and in front showing a greater shading of yellow. The throat area will show a dusty gray with hints of yellowish-green. The chest is a lighter brown shaded with yellow, with the yellow more prominent closer to the middle of the belly. The bill is gray, with the lower portion showing a lighter shade than the top. Iris is a light gray. Legs color varying from a shade of gray to a shade of pink. Sexes are similar, with the juvenile having a darker iris.
T. o. pallidipectus is somewhat like the nominate with a lighter breast of a blander shade of olive green.
T. o. pacificus throat has a darker, clearer gray color, a noticeable band on the breast, more of a green cast to the rump.
T. o. nelsoni shows similarities to T. o. pallidipectus but with a greater tint of green.
T. o. bulunensis only exhibits gray on its chin and randomly on the upper part of its throat. The body has a gray shaded green color that is more noticeable on the breast area, decreasing following down the sides. Its crown has an orangish shaded brown appearance.
T. o. ferrugineifrons has a duller, less prominent underneath area varying from a light shade to a faded greenish tint. Iris may vary from whitish to a brownish shade. The bill is darker above.
T. o. viridior has a clearer olive green color to its upper portion.
T. o. lutescens shows a lighter shade of green with a yellowish cast but not on its crown, light brown on the tail, dark iris, a warmer shade of yellow underneath.
T. o. rubrifrons has an upper-body with a more brown shade, dark irises, and dark brown tail.
There are 9 subspecies:
T. o. ochraceiceps
Gulf lowlands of southern Mexico to Guatemala
T. o. pallidipectus
Tropical Honduras to western Panama
T. o. nelsoni
Eastern Panama (Veraguas to Darién)
T. o. bulunensis
Extreme eastern Panama to Pacific coast of Colombia and western Ecuador
T. o. ferrugineifrons
Southeastern Colombia east to southern Venezuela, extreme western Guyana, and northwestern Brazil (west of the Rio Negro), south to northeastern Peru and western Amazonian Brazil south of the Amazon, east to the west bank of the Madeira River
T. o. viridior'
Eastern Peru (south of the Maranon and Amazon rivers) south to northern Bolivia
T. o. luteifrons
Extreme eastern[Venezuela (eastern Bolívar), the Guianas and northern Amazonian Brazil (east of the Rio Negro)
T. o. lutescens
Northern Brazil south of the Amazon (Rio Madeira to Rio Xingu)
T. o. rubrifrons
Northeast Brazil (Rio Tocantins to Para)
Moist lowland forests.
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, S. M. Billerman, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2019. The eBird/Clements Checklist of Birds of the World: v2019. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
- Lepage D. (2021) [Avibase - https://avibase.ca/ED290593]. Retrieved 22 July 2021
- Brewer, D., J. del Hoyo, G. M. Kirwan, and N. Collar (2020). Tawny-crowned Greenlet (Tunchiornis ochraceiceps), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.tacgre1.01
- BirdForum Opus contributors. (2024) Tawny-crowned Greenlet. In: BirdForum, the forum for wild birds and birding. Retrieved 2 March 2024 from https://www.birdforum.net/opus/Tawny-crowned_Greenlet