Mallard vs Secretário
Anas platyrhynchos comparado com Sagittarius serpentarius
Side-by-Side Comparison
| Atributo | Mallard | Secretário |
|---|---|---|
| Nome científico | Anas platyrhynchos | Sagittarius serpentarius |
| Ordem | Anseriformes | Accipitriformes |
| Família | Anatidae | Sagittariidae |
| Estado de conservação | Least Concern | Endangered |
| Comprimento | 58,0 cm (22.8 in) | 130,0 cm (51.2 in) |
| Envergadura | 90,0 cm (35.4 in) | 210,0 cm (82.7 in) |
| Peso | 1100,0 g (38.80 oz) | 3700,0 g (130.51 oz) |
| Dieta | Omnivorous — aquatic plants, seeds, insects, crustaceans, and mollusks. Feeds by dabbling, upending, and grazing … | Snakes, lizards, small mammals, and large insects. Hunts on foot, stomping prey to death with … |
| Tamanho da postura | 4-18 | 1-4 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Mallard
Nearly any wetland habitat including lakes, rivers, ponds, marshes, estuaries, and urban park ponds.
Secretário
Open grasslands, savannas, and light woodland across sub-Saharan Africa. Avoids dense forests and very arid regions.
Song & Call Comparison
Mallard
Female gives the classic 'quack-quack-quack', descending in pitch. Male utters soft nasal 'raeb-raeb'. Both give a high 'gag-gag-gag' when alarmed or taking flight.
Secretário
A surprisingly deep, resonant croaking 'kowrr-kowrr' often heard at dawn on African savannas. Also gives pig-like grunting sounds. Mostly silent compared to true songbirds.
Geographic Range & Migration
Mallard
Native across the Northern Hemisphere in North America, Europe, and Asia. Introduced to Australia and New Zealand.
Secretário
Sub-Saharan Africa from Senegal and Somalia south to South Africa. Resident throughout its range.
Estado de conservação
Mallard
Secretário
How to Tell Them Apart
Mallard
Breeding males have an iridescent green head, white neck ring, chestnut breast, and grey body. Females are mottled brown. Both sexes show a blue speculum bordered by white.
Broad, flat bill — yellow-green in males, orange-brown in females
Secretário
Grey body plumage with black flight feathers and thigh feathers. Distinctive long black crest feathers trail from the back of the head. Orange-red bare facial skin.
Short, strong, hooked greyish bill with a yellowish cere
About These Birds
Mallard
The mallard is the ancestor of most domestic duck breeds and the most abundant and widespread dabbling duck in the world. Males perform elaborate courtship displays including head-bobbing and whistle-grunt calls. Mallards are highly adaptable, thriving in both wilderness and urban environments.
Secretário
The secretary bird is the only raptor that hunts primarily on foot, striding through grasslands on crane-like legs up to 1.2 meters tall. Its name may derive from the crest feathers resembling quill pens tucked behind a secretary's ear. The species is classified as Endangered due to habitat loss and decline across much of its range.