Ring-necked Duck vs African Pygmy-goose
Aythya collaris comparado con Nettapus auritus
Side-by-Side Comparison
| Atributo | Ring-necked Duck | African Pygmy-goose |
|---|---|---|
| Nombre científico | Aythya collaris | Nettapus auritus |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 39,0 cm (15.4 in) | 29,9 cm (11.8 in) |
| Peso | 825,5 g (29.12 oz) | 272,5 g (9.61 oz) |
| Dieta | Eats molluscs, crustaceans, and aquatic invertebrates; dives in shallow coastal water; diet dominated by benthic … | 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
Ring-necked Duck only
African Pygmy-goose only
Ninguno
Ring-necked Duck
Breeds on boreal lakes and bogs in North America from Alaska and Canada south to the northern United States. Winters on freshwater lakes, reservoirs, and marshes across the southern United States, Mexico, and Caribbean.
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
Ring-necked Duck
Male produces a low, purring wheeze; female gives a harsh, rolling quack. The purring male call is understated; found on North American freshwater lakes; female calls are emphatic and nasal.
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
Ring-necked Duck
Breeds in western Arctic Canada and Alaska; winters along the Pacific coast from Alaska to Baja California.
African Pygmy-goose
Breeds across temperate to sub-Arctic Eurasia; winters in Africa, South Asia, and Southeast Asia.
Estado de conservación
Ring-necked Duck
African Pygmy-goose
How to Tell Them Apart
Ring-necked Duck
Males black back and breast; gray flanks with white vertical mark near breast. Iridescent dark purple head with subtle chestnut neck ring. Bill blue-gray with white ring near tip. Females …
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
Ring-necked Duck
El pato de collar es un pato buceador de América del Norte a menudo confundido con otras especies de porrones. El macho tiene la cabeza y el cuello de color negro-verde lustroso, con un collar rojo poco visible en la base del cuello. Tanto el macho como la hembra tienen un distintivo anillo blanco cerca de la punta del pico. Habita en pequeños lagos y estanques boscosos.
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.