Red-breasted Merganser vs African Pygmy-goose
Mergus serrator comparado con Nettapus auritus
Side-by-Side Comparison
| Atributo | Red-breasted Merganser | African Pygmy-goose |
|---|---|---|
| Nombre científico | Mergus serrator | Nettapus auritus |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 46,7 cm (18.4 in) | 29,9 cm (11.8 in) |
| Peso | 1058,3333333333333 g (37.33 oz) | 272,5 g (9.61 oz) |
| Dieta | Dives for small fish, crustaceans, and aquatic invertebrates in coastal and freshwater habitats. Pursues fish … | Filter-feeds on invertebrates and seeds; dabbles in shallow ponds; diet more plant-based outside spring breeding … |
| Tamaño de la puesta | 6-14 | 6-12 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Red-breasted Merganser only
African Pygmy-goose only
Ninguno
African Pygmy-goose
Freshwater lakes, ponds, and rivers with floating water lilies and other aquatic vegetation across sub-Saharan Africa from Senegal to Tanzania. Nests in tree cavities near water. Highly dependent on water lily vegetation.
Song & Call Comparison
Red-breasted Merganser
Male produces a harsh, rasping series of notes; female gives a rough, guttural grunting. The harsh, rattling call is louder than Goosander; pairs and flocks create a rasping coastal cacophony.
African Pygmy-goose
Male produces a soft, wheezy whistle; female gives a quiet, duck-like quack. Pairs exchange rapid twittering notes during courtship on lily-covered African pools.
Geographic Range & Migration
Red-breasted Merganser
Circumpolar breeder in boreal and Arctic zones. Winters on coasts and large water bodies south to the Mediterranean and southern Asia.
African Pygmy-goose
Breeds across temperate to sub-Arctic Eurasia; winters in Africa, South Asia, and Southeast Asia.
Estado de conservación
Red-breasted Merganser
African Pygmy-goose
How to Tell Them Apart
Red-breasted Merganser
Male has dark green shaggy double crest, speckled chestnut breast band, white collar, and grey flanks; red bill. Female has rufous-brown head with ragged crest blending gradually into grey neck …
African Pygmy-goose
Tiny. Males have glossy dark green head with orange facial patch and ear spot; chestnut-orange flanks; white underparts; black and green back. Females duller with dark eye-stripe. Small yellow-green bill.
About These Birds
Red-breasted Merganser
El serrano o merganso mediano es un merganso de tamaño mediano con el macho de cabeza verde con un desordenado moño y el pecho manchado de castaño. Ampliamente distribuido en el hemisferio norte, cría principalmente en costas marinas y grandes lagos, siendo uno de los pocos mergansos que cría regularmente en ambientes costeros. Inverna en costas marinas de mares templados.
African Pygmy-goose
El pigmeo africano o pato enano africano es el pato más pequeño de África y uno de los patos más pequeños del mundo. Tiene plumaje de color verde oscuro y blanco con el cuello de color castaño rojizo. Habita en lagunas tranquilas, estanques y pantanos con abundante vegetación flotante, especialmente lirios de agua, en África subsahariana.