Reinita Plañidera

Identificación

Reinita robusta que se encuentra cerca del suelo en vegetación densa. Amarilla por debajo con la cabeza gris azulada y el dorso oliváceo. Los machos adultos muestran un parche negro en el pecho. Las hembras tienen la cabeza de un gris más pálido; los inmaduros son más oliváceos con la garganta amarillenta. Se reproduce en claros arbustivos y con maleza dentro de bosques mixtos o de coníferas. A menudo prefiere los zarzales de frambuesa. Tiende a permanecer escondida en la vegetación baja, por lo que puede ser difícil de ver. Escuche su canto rodado, “churry churry churry chew”. Muy similar a la Reinita de MacGillivray, pero con poca superposición de distribución, y la Reinita Enlutada tiene la cola algo más corta y carece de arcos oculares blancos marcados. También se confunde frecuentemente con la Reinita Enmascarada, especialmente en otoño, pero la Enlutada es más grande, con un pico rosado más robusto y partes inferiores de un amarillo más brillante.

Taxonomía

Nombre científico

Geothlypis philadelphia

Autoridad

(Wilson, A, 1810)

Orden

Passeriformes

Familia

Parulidae

Género

Geothlypis

Distribución y hábitat

Mourning warblers have breeding ground in southern Canada, and are commonly seen during migration in the central and eastern United States, Belieze, Bonaire, Puerto Rico, Guatemala, Panama, and other Central American Islands. These birds migrate to Central America and northern South America. Mourning warblers are low or ground nesters, and prefer disturbed forests with a thick under-story and covered canopy. In the winter they prefer wet lowland habitat with dense vegetation.

Área de cría

NA : c Canada to se Canada and ne USA

Área no reproductiva

Nicaragua to n SA

Migración

Complete migrants

Comportamiento

Mourning warblers forage low in vegetation, sometimes catching insects in flight. These birds mainly eat insects, also some plant material including fruiting bodies from the Cecropia tree in winter. Their diet is not well documented but also includes insect larvae and spiders that they pick from the branches of shrubs. They are also known to remove the legs and wings of the insects before consuming.<p>Mourning warblers breed in southern Canada. Their breeding habitat is thickets and semi-open areas with dense shrubs across Canada east of the Rockies and the northeastern United States. The nest is an open cup placed on the ground in a well-concealed location under thick shrubs or other vegetation. Their nest is usually made out of grass, leaves and bark and lined with roots or other thin material.<p>Mourning warblers typically lay 2-5 eggs, which are white or speckled brown and black in appearance. Incubation is 12 days long and both adult males and females utilize a distraction technique of pretending to have broken wings to distract predators from their nest. Mourning warblers have young with gray tufts on their head and red mouths. Adult females are also known consume their eggs after their young hatch. The number of days for young to fledge is 7–9.<p>The song of this bird is a bright repetitive warble. The warble consists of rolling phrases that sound that typically lower in volume at the end and can sound like "chirry, chirry, chirry, chorry, chorry." The call is a sharp chip. There are usually two different pitched calls, with one higher than the harsh chip.

Conservación

According to the North American Breeding Bird Survey, Mourning Warbler populations have declined by about 43% in the last 50 years. However, they are still categorized as a species of least concern with 17 million estimated as a global breeding population by Partners in Flight. As they have a preference for disturbed forests, they may be benefitting from human development that may be negatively effecting the habitats of other bird species.

Tendencia poblacional

declining