Black-capped Vireo
Black-capped Vireo
Vireo atricapilla
A simple vista
Todo el texto de la guía de aves y los mapas de distribución fueron adaptados de Lives of North American Birds de Kenn Kaufman© 1996, utilizado con permiso de Houghton Mifflin Harcourt Publishing Company. Reservados todos los derechos.
Categoría
Perching Birds, Vireos
IUCN Status
Vulnerable
Hábitat
Forests and Woodlands, Shrublands, Savannas, and Thickets
Región
Plains, Texas
Población
220.000
Rango e identificación
Mapa de migración y distribución
Generally arrives in Texas in April, departs in September. Migrates toward the southwest in fall, wintering along west coast of Mexico.
Descripción
Tamaño
About the size of a Sparrow
Forma de cola
Notched, Square-tipped
Cantos y llamadas
Hábitat
Oak scrub, brushy hills, rocky canyons. Breeds on hot dry hillsides with dense thickets of brush, especially scrub oaks, often with many openings or gaps rather than solid cover. Winters in Mexico in dense thickets and woodland edges, especially in foothills and lowlands.
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Comportamiento
Huevos
3-4, rarely 2-5. White, unmarked (most other vireos lay spotted eggs). Incubation, by both parents, averages about 15 days, surprisingly long for small size of bird. Young: Both parents feed nestlings. Young leave the nest about 10-12 days after hatching, and may be cared for by parents for more than another month. Sometimes male is left to care for first brood while female begins 2nd nesting attempt.
Cría
Both parents feed nestlings. Young leave the nest about 10-12 days after hatching, and may be cared for by parents for more than another month. Sometimes male is left to care for first brood while female begins 2nd nesting attempt.
Comportamiento alimentario
Forages more actively than most vireos, moving among branches and twigs in dense cover, sometimes hanging upside down like a chickadee to take items from underside of foliage.
Dieta
Mostly insects, some berries. Feeds mainly on insects in summer; diet not known in detail, but eats many caterpillars, beetles, small grasshoppers and crickets, and others, as well as spiders. Also eats some berries and small fruits. Winter diet poorly known, but may include more berries.
Nidificación
Male defends territory by singing frequently through much of breeding season. In courtship, male sings while following female; may also perform short song-flight. Nest: Placed in low scrubby oak or other dense shrub, usually 2-6' above ground, rarely higher. Both parents help build nest, a small hanging cup suspended in the horizontal fork of a twig. Nest is made of grass, strips of bark, weeds, leaves, bound together with spiderwebs; inside is lined with fine grass.
Vulnerabilidad
Estado de conservación
Vulnerable. Disappeared from many former haunts by the 1980s owing to loss and degradation of habitat and heavy nest parasitism by Brown-headed Cowbirds. Listed as endangered in 1987. Cooperative efforts by federal and state agencies and private landowners helped to reverse its decline. By 2018, recovery efforts were successful enough that the vireo was removed from the endangered species list.
Amenazas climáticas que enfrenta el Black-capped Vireo
Elija un escenario de temperatura a continuación para ver qué amenazas afectarán a esta especie de ave a medida que aumente el calentamiento global. Las mismas amenazas impulsadas por el cambio climático que ponen en riesgo a las aves afectarán también a otras especies de vida silvestre y a las personas.
