Indian Spot-billed Duck vs American Black Duck
Anas poecilorhyncha comparado con Anas rubripes
Side-by-Side Comparison
| Atributo | Indian Spot-billed Duck | American Black Duck |
|---|---|---|
| Nombre científico | Anas poecilorhyncha | Anas rubripes |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 54,4 cm (21.4 in) | 53,4 cm (21.0 in) |
| Peso | 1220,0 g (43.03 oz) | 1211,25 g (42.73 oz) |
| Dieta | Dives for fish and aquatic invertebrates in clear cold streams; serrated bill adapted for catching … | Eats fish and aquatic invertebrates; dives in coastal and freshwater habitats; diet shifts toward molluscs … |
| Tamaño de la puesta | 6-12 | 1-17 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Indian Spot-billed Duck only
Ninguno
American Black Duck only
Indian Spot-billed Duck
Freshwater lakes, rivers, marshes, rice paddies, and tanks across the Indian subcontinent to Southeast Asia. Common near human habitation. Largely sedentary with some local seasonal movement.
American Black Duck
Freshwater and brackish wetlands in eastern North America from Atlantic Canada south along the coast to Georgia. Breeds in northern bogs and wetlands. Winters on coastal marshes, estuaries, and freshwater lakes.
Song & Call Comparison
Indian Spot-billed Duck
Female gives a loud, emphatic quacking series; male produces a raspy rehb note. Calls are Mallard-like but slightly lower; flocks create a cacophonous quacking chorus on Indian lakes.
American Black Duck
Female produces a loud, deep quacking series; male gives a low, raspy grunt. Voice is deeper and huskier than a Mallard; pairs call powerfully across northeastern North American wetlands.
Geographic Range & Migration
Indian Spot-billed Duck
Resident in freshwater lakes and rivers across Southeast Asia, from Myanmar to Indonesia and the Philippines.
American Black Duck
Breeds in the steppe zone of Central Asia; winters in South Asia, East Africa, and coastal Southeast Asia.
Estado de conservación
Indian Spot-billed Duck
American Black Duck
How to Tell Them Apart
Indian Spot-billed Duck
Large brownish duck with pale face and distinctive yellow-tipped black bill with red basal spot. Dark cap and eye stripe. Iridescent green speculum with white border. White tertials visible at …
American Black Duck
Sooty dark brown body; head and neck paler buff with dark streaking. Iridescent purple speculum without white border. Males have yellow-green bill; females olive with orange blotches. Silvery underwings in …
About These Birds
Indian Spot-billed Duck
El pato de pico manchado es un pato grande de color marrón con un pico negro con punta amarilla y manchas rojas llamativas en la base. Ampliamente distribuido por el sur y el este de Asia, desde el subcontinente indio hasta Japón, habita en una variedad de humedales de agua dulce. Existen varias subespecies que difieren levemente en el patrón del pico y las marcas faciales.
American Black Duck
El pato negro americano es un gran pato de color marrón muy oscuro con una cabeza más clara y un llamativo espéculo alar púrpura. Habita en humedales del este de Norteamérica y se está hibridando cada vez más con el pato de collar introducido en su rango, lo que representa una amenaza para su pureza genética. Prefiere marismas costeras, pantanos boscosos y lagos tranquilos.