Black-headed Duck vs Maccoa Duck
Heteronetta atricapilla comparado con Oxyura maccoa
Side-by-Side Comparison
| Atributo | Black-headed Duck | Maccoa Duck |
|---|---|---|
| Nombre científico | Heteronetta atricapilla | Oxyura maccoa |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Endangered |
| Longitud | — | — |
| Envergadura | 34,7 cm (13.7 in) | 31,3 cm (12.3 in) |
| Peso | 528,5 g (18.64 oz) | 685,3333333333334 g (24.17 oz) |
| Dieta | Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet … | Dives for aquatic invertebrates and plant seeds in African lakes and marshes. Uses lobed feet … |
| Tamaño de la puesta | 2 | 4-12 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Black-headed Duck
Male gives a soft, raspy peeping note; female produces a muted quack. An obligate brood parasite with reduced vocalizations; subdued calls suit its secretive lifestyle among Argentine reeds.
Maccoa Duck
Male emits a rapid, staccato drumming display; female gives a harsh, emphatic quack. The drumming call is powerful and diagnostic; this endangered southern African stiff-tail displays at dawn.
Geographic Range & Migration
Black-headed Duck
Resident in southern South America from southern Brazil and Bolivia south to Argentina and Chile. Found on lakes and marshes in open lowlands.
Maccoa Duck
Resident in eastern and southern Africa from Ethiopia and Kenya south to the Cape. Found on lakes and marshes with dense aquatic vegetation.
Estado de conservación
Black-headed Duck
Maccoa Duck
How to Tell Them Apart
Black-headed Duck
Male has distinctive jet-black head and neck, warm chestnut-brown back, and pale buff underparts; blue-grey bill with red base. Female is streaked brown above with pale supercilium and whitish underparts.
Maccoa Duck
Male has glossy black head, deep chestnut-red body, and vivid sky-blue bill; stiff tail often cocked. Female is dark brown above with streaked buff below and two pale facial stripes …
About These Birds
Black-headed Duck
El pato cabeza negra es un pequeño pato buceador (~530 g) de América del Sur, familia Anatidae, y el único miembro del género Heteronetta. Tiene la cabeza negra en el macho y cuerpo marrón. Parásita de nido obligada: pone sus huevos en los nidos de otras aves acuáticas, especialmente fochas y pollas de agua. Habita en lagos y lagunas con vegetación emergente de Argentina, Bolivia, Brasil, Chile, Paraguay y Uruguay. No cría su propia cría nunca.
Maccoa Duck
El pato maccoa es un pato de cola tiesa de África oriental y meridional con el macho de llamativo pico azul brillante y cabeza y cuello de color negro intenso. Habita en lagos y pantanos de agua salobre y dulce, especialmente ricos en algas y zooplancton. La hembra es de color marrón oscuro con rayas faciales. Está clasificado como vulnerable.