Cerulean warbler
| Cerulean warbler | |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Passeriformes |
| Family: | Parulidae |
| Genus: | Setophaga |
| Species: | S. cerulea |
| Binomial name | |
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Setophaga cerulea (Wilson, 1810) |
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| Range of S. cerulea Breeding range Wintering range | |
| Synonyms | |
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Sylvia cerulea Wilson, 1810 |
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Sylvia cerulea Wilson, 1810
Dendroica cerulea (Wilson, 1810)
Dendroica caerulea (Wilson, 1810) (unjustified emendation)
The cerulean warbler (Setophaga cerulea) is a small songbird of the New World warbler family. Adult males have pale cerulean blue and white upperparts with a black necklace across the breast and black streaks on the back and flanks. Females and immature birds have greyer or greenish upperparts, a pale stripe over the eye, and no streaking on the back and no neck. All of these birds have wing bars and a thin pointed bill. They are found in deciduous forests of eastern North America during the breeding season and then migrate to forested mountain areas in South America. The species is considered threatened with an IUCN status of Vulnerable (VU), indicating it is considered to be facing a high risk of extinction in the wild.
Adult males have pale cerulean blue upperparts and white underparts with a black necklace across the breast; they also have black streaks on the back and flanks. Females and immature birds have greyer or greenish upperparts, a pale stripe over the eye, and no streaking on the back and no necklace. All of these birds, regardless of their age, have wing bars and a thin pointed bill.
Their breeding habitats are mature deciduous forests in eastern North America. They migrate to spend the boreal winter in forested mountain areas in South America.
They forage actively high in trees, sometimes catching insects in flight. These birds mainly eat insects. Their nests are cup-shaped, and are placed on a horizontal branch high in a hardwood tree. The song is a buzzed zray zray zray zray zeeee. The call is called a slurred chip.
The cerulean warbler is the fastest declining neotropical migrant songbird. Among the many threats they face, their wintering habitat in the northern Andes is dwindling rapidly. Cerulean warblers depend on shade coffee plantations during the winter. This traditional farming technique is at risk as coffee prices fluctuate and pressure to switch to higher-yield sun coffee or other crops intensifies.
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Wikipedia