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Prothonotary Warbler | Protonotaria citrea

Citroenzanger | Reinita protonotaria | Mariquita-protonotária

The Prothonotary Warbler is a golden-yellow warbler with blue-grey wings that is tied to water both on its breeding and wintering grounds. Unusually for a warbler, it nests in tree cavities in swamp forests of eastern North America, and it winters mainly in the mangroves of Central America and northern South America.

Prothonotary Warbler (Protonotaria citrea)
Photo: U.S. Fish and Wildlife Service Northeast Region — CC BY 2.0 · Wikimedia Commons

Voice

A loud, metallic chip, resembling the call of the waterthrushes. The song is a series of clear, even notes, sweet-sweet-sweet.

Listen: SongXC1082047

Recording: David Darrell-Lambert — CC BY-NC-SA 4.0 · xeno-canto

Identification

13–14 cm, with a fairly long, pointed black bill. The male has a golden-yellow head and underparts, an olive-green back, plain blue-grey wings without wing bars and a blue-grey tail with white spots. The female is duller yellow, with an olive crown. The undertail coverts are white. The dark eye stands out in the yellow head.

Confusion species

American Yellow Warbler Setophaga aestiva and Mangrove Warbler Setophaga petechia have yellow edges to olive wings, yellow tail spots and a shorter bill. Blue-winged Warbler Vermivora cyanoptera has a black eye-line and two white wing bars.

Habitat

On the wintering grounds mainly in mangroves, also in swamp forest, wet woodland along rivers and lakes and humid lowland forest, mostly below 500 m. It takes insects, spiders and small snails in the lower and middle levels and sometimes drinks nectar. It does not breed in the guide area.

Range and movements

Winter visitor, mainly September to March. In Colombia fairly common in the mangroves of the Caribbean coast, scarcer on the Pacific coast and inland in the Magdalena valley. In Ecuador rare, mainly in the north-west. In Peru exceptional. Absent from Bolivia and the Galápagos. Breeds in the eastern United States and winters from southern Mexico to Colombia and Venezuela.

  • Winter visitor (c. Oct–Mar)
  • dark = core range, pale = thinly spread
Density map from the occurrence records of GBIF (2006-10-01 – 2026-09-30), counted per 1.41° grid cell and per month and divided by all bird records in that same cell — so the number of birdwatchers does not shape the picture. Colour depth follows that share and fades out gradually, so the map does not follow national borders. Country outlines: Natural Earth (public domain).

How and when to look

In the winter months, search along mangroves and swamp forest on the Caribbean coast of Colombia, often low over the water; the loud call gives the bird away.

Conservation status

Least Concern. Decline of the North American population and loss of mangroves on the wintering grounds are the main threats.

Scientific name

Protonotaria citrea | (Boddaert, 1783)

Boddaert described the species in 1783 as Motacilla citrea; because it was later moved to another genus, the author and year stand in brackets. The genus Protonotaria was introduced in 1858 by Baird. The genus name comes from Late Latin protonotarius, 'prothonotary', a notary at the Byzantine court who wore golden-yellow robes, for the yellow plumage. The species name comes from Latin citreus, 'citrine, lemon-yellow', for the yellow plumage. The specimen the first description was based on came from Louisiana, United States.