Scaly-sided Merganser vs African Pygmy-goose
Mergus squamatus ile kıyaslandığında Nettapus auritus
Side-by-Side Comparison
| Özellik | Scaly-sided Merganser | African Pygmy-goose |
|---|---|---|
| Bilimsel Ad | Mergus squamatus | Nettapus auritus |
| Takım | Anseriformes | Anseriformes |
| Familya | Anatidae | Anatidae |
| Koruma Durumu | Endangered | Least Concern |
| Uzunluk | — | — |
| Kanat Açıklığı | 51,2 cm (20.2 in) | 29,9 cm (11.8 in) |
| Ağırlık | 1145,8 g (40.42 oz) | 272,5 g (9.61 oz) |
| Beslenme | Dives for fish in fast-flowing East Asian rivers. Endangered; highly piscivorous with serrated bill adapted … | Filter-feeds on invertebrates and seeds; dabbles in shallow ponds; diet more plant-based outside spring breeding … |
| Kuluçka Büyüklüğü | 4-14 | 6-12 |
| Population Trend | — | — |
Habitat Comparison
Ortak Yaşam Alanları
Scaly-sided Merganser only
African Pygmy-goose only
Hiçbiri
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
Scaly-sided Merganser
Male gives a quiet, low grunting call; female produces a guttural, croaking series. Endangered; calls are poorly known; similar to Red-breasted Merganser but quieter in Manchurian forest rivers.
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
Scaly-sided Merganser
Breeds in southern Russia, northern China, and the Russian Far East. Winters in southern China and Korea. Found on fast-flowing forested rivers.
African Pygmy-goose
Breeds across temperate to sub-Arctic Eurasia; winters in Africa, South Asia, and Southeast Asia.
Koruma Durumu
Scaly-sided Merganser
African Pygmy-goose
How to Tell Them Apart
Scaly-sided Merganser
Male has iridescent dark green head with long flat crest, white body with distinctive black scaly pattern on flanks, and black back with white patches. Female has brownish-red crested head …
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
Scaly-sided Merganser
A medium-large merganser (~1.1 kg) in family Anatidae, distinguished by scaly flank patterning and a shaggy crest. Breeds along fast, clear rivers in old-growth forests of far eastern Russia and China; winters in rivers of East and Southeast Asia. Feeds on fish. Endangered due to deforestation, river pollution, and human disturbance of nesting sites.
African Pygmy-goose
A tiny jewel-like duck—one of Africa's smallest waterfowl. Males have iridescent green-and-white plumage, an orange bill, and a dark green cap; females are mottled brown. Found on lily-covered lakes in sub-Saharan Africa. Perches on water lily pads and feeds on their seeds and flowers.