Barn Swallow vs Diều ăn rắn
Hirundo rustica so với Sagittarius serpentarius
Side-by-Side Comparison
| Thuộc Tính | Barn Swallow | Diều ăn rắn |
|---|---|---|
| Tên Khoa Học | Hirundo rustica | Sagittarius serpentarius |
| Bộ | Passeriformes | Accipitriformes |
| Họ | Hirundinidae | Sagittariidae |
| Tình Trạng Bảo Tồn | Least Concern | Endangered |
| Chiều Dài | 19,0 cm (7.5 in) | 130,0 cm (51.2 in) |
| Chiều Dài Sải Cánh | 33,0 cm (13.0 in) | 210,0 cm (82.7 in) |
| Khối Lượng | 19,0 g (0.67 oz) | 3700,0 g (130.51 oz) |
| Chế Độ Ăn | Aerial insects caught in continuous agile flight, including flies, beetles, moths, and aphids. Drinks by … | Snakes, lizards, small mammals, and large insects. Hunts on foot, stomping prey to death with … |
| Số Trứng | 2-7 | 1-4 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Môi Trường Sống Chung
Không
Barn Swallow only
Diều ăn rắn only
Barn Swallow
Open farmland, meadows, and areas near water. Nests almost exclusively in human-made structures such as barns, bridges, and eaves.
Diều ăn rắn
Open grasslands, savannas, and light woodland across sub-Saharan Africa. Avoids dense forests and very arid regions.
Song & Call Comparison
Barn Swallow
A rapid, twittering song: a long stream of 'vit-vit-vit' and rolling chirps. Also gives a sharp 'vit' flight call. Song can last many minutes without pause. Musical and liquid.
Diều ăn rắn
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
Barn Swallow
Breeds across the Northern Hemisphere in North America, Europe, and Asia. Winters in South America, Africa, and South Asia.
Diều ăn rắn
Sub-Saharan Africa from Senegal and Somalia south to South Africa. Resident throughout its range.
Tình Trạng Bảo Tồn
Barn Swallow
Diều ăn rắn
How to Tell Them Apart
Barn Swallow
Metallic blue-black upperparts, rufous forehead and throat, and pale buff to rufous underparts. Deeply forked tail with elongated outer streamers.
Short, wide, flat black bill adapted for catching insects in flight
Diều ăn rắn
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
Barn Swallow
The barn swallow is the most widespread swallow species in the world and has one of the longest migrations of any passerine. Its arrival signals spring across the Northern Hemisphere, inspiring cultural references from ancient Greece to modern poetry. Barn swallows have become almost entirely dependent on human structures for nesting.
Diều ăn rắn
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.