- Sao Tome White-eye
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Sao Tome White-eye Zosterops feae Scientific name definitions

Josep del Hoyo, Nigel Collar, and Guy M. Kirwan
Version: 1.0 — Published March 4, 2020
Text last updated December 7, 2018

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Field Identification

10·5 cm; 6–10·7 g. Compared to adult of formerly conspecific Z. ficedulinus, adult is slightly darker and more uniformly greenish above, including top of head, greyer (as opposed to whiter) below on throat, breast and flanks, with patches of tawny-rufous or brownish cinnamon on posterior flanks, and more yellow in the underparts. In addition, the white eyering and white underwing tufts also appear to be consistently thicker, with an often conspicuous yellow frons and chin. The bill is pink or orange-pink, occasionally with a grey spot at the tip of the maxilla (all-grey bill in Z. ficedulinus, with pink, if present, mostly restricted to the mandible) and tarsi consistently pink, whereas in Z. ficedulinus they are sometimes grey. Sexes alike. Juvenile undescribed.

Systematics History

Until recently considered conspecific with Z. ficedulinus, but differs genetically (1) and by its greener, less brown-washed upperparts, making less contrasting crown (ns[1]); yellowish-white line above bill (2); whitish-grey vs yellow-white breast (2); brownish-ochre wash on lower flanks (2); much broader habitat selection (1); and seemingly somewhat lower-pitched calls (allow 1). Monotypic.

Subspecies

Monotypic.

Distribution

São Tomé I, in Gulf of Guinea.

Habitat

Dense primary and degraded rainforest from sea-level to 1600 m, mainly above 400 m; also patches of dry woodland and isolated large trees in savanna. Prefers forested areas with intermediate levels of anthropogenic disturbance.

Migration Overview

Resident; possibly some local movement.

Diet and Foraging

Insects and berries. In pairs, family parties, and flocks of up to 20 individuals; often in mixed flocks with Z. lugubris, Sao Tome Prinia (Prinia molleri), Sao Tome Paradise-flycatcher (Terpsiphone atrochalybeia) and Newton’s Sunbird (Anabathmis newtonii). Forages in middle levels. Gleans insects from twigs, leaves and other vegetation.

Sounds and Vocal Behavior

Powerful dawn song a monotonous and insistent, rapid series of 3–6 burry “ptirrr” notes, last note more stressed; more complex song of burry, tinny and musical notes given during the day, especially during last hour of daylight. Contact calls apparently very similar to those of formerly conspecific Z. ficedulinus, but perhaps lower-pitched; compared to Z. lugubris its chipping notes are said to be quieter and higher-pitched.

Breeding

Fledglings seen in Feb. No other information.

Not globally threatened. Currently considered Near Threatened. Restricted-range species: present in São Tomé EBA. Rare to locally uncommon. Population currently estimated at 2500–10,000 mature individuals. Declined worryingly; it was common in 1920s, uncommon in 1970s, and generally rare and only locally quite common in 1990; seems to fluctuate in numbers, but is believed to be currently broadly stable, although the species is at risk from clearance of high-altitude rainforest for cocoa plantations. Historically, large areas of primary forest were cleared for cocoa and coffee plantations. Today, land privatization is leading to an increase in numbers of small farms and the clearance of trees, particularly in the N of the island, while road developments along E & W coasts of São Tomé are increasing access to previously remote areas. Construction for the country’s developing oil industry, including the established idea of building ‘free ports’. However, prospecting on land was unsuccessful, and any construction is likely to be offshore.

Distribution of the Sao Tome White-eye - Range Map
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  • Year-round
  • Migration
  • Breeding
  • Non-Breeding
Distribution of the Sao Tome White-eye

Recommended Citation

del Hoyo, J., N. Collar, and G. M. Kirwan (2020). Sao Tome White-eye (Zosterops feae), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.satwhe2.01
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