Arctic Tern vs Eurasian Magpie
Sterna paradisaea เปรียบเทียบกับ Pica pica
Side-by-Side Comparison
| คุณสมบัติ | Arctic Tern | Eurasian Magpie |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Sterna paradisaea | Pica pica |
| อันดับ | Charadriiformes | Passeriformes |
| วงศ์ตระกูล | Laridae | Corvidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | 34.0 cm (13.4 in) | 46.0 cm (18.1 in) |
| กว้างปีก | 80.0 cm (31.5 in) | 56.0 cm (22.0 in) |
| น้ำหนัก | 110.0 g (3.88 oz) | 220.0 g (7.76 oz) |
| อาหาร | Small fish and crustaceans caught by plunge-diving from the air. Hovers briefly before diving. | Omnivorous — insects, grains, berries, carrion, eggs, and nestlings. Caches surplus food for later retrieval. |
| จำนวนไข่ | 2-3 | 2-8 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
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Arctic Tern only
Eurasian Magpie only
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Arctic Tern
Breeds on coastal and tundra habitats. Spends most of its life at sea over the open ocean. Nests in colonies on beaches and rocky shores.
Eurasian Magpie
Open woodland, farmland, hedgerows, parks, and gardens. Common in suburban and urban environments across Eurasia.
Song & Call Comparison
Arctic Tern
A sharp, grating 'kree-yah' alarm call. Also gives 'kik-kik-kik' near the nest. Highly aggressive vocally during the Arctic breeding season. Calls are harsh and insistent.
Eurasian Magpie
A harsh, rapid chattering 'chach-chach-chach'. Also gives a variety of whistles and clucking notes. Known to mimic other birds and sounds. Very vocal in pairs.
Geographic Range & Migration
Arctic Tern
Breeds in the Arctic and sub-Arctic. Migrates to the Antarctic, experiencing two summers per year. Found on every ocean.
Eurasian Magpie
Europe, Asia, and northwest Africa. One of the most recognizable birds across the Palearctic region.
สถานะการอนุรักษ์
Arctic Tern
Eurasian Magpie
How to Tell Them Apart
Arctic Tern
Pale grey upperparts, white underparts with a black cap. Blood-red bill and short red legs. Deeply forked tail streamers. Winter adults lose the full black cap.
Slender, pointed, bright red bill
Eurasian Magpie
Bold black and white pattern with iridescent blue-green gloss on the wings and long graduated tail. White scapulars and flanks contrast with the black body.
Strong, straight black bill
About These Birds
Arctic Tern
The Arctic tern holds the record for the longest known migration of any animal, traveling roughly 70,000 km annually from Arctic to Antarctic and back. Over its 30-year lifespan, it may fly the equivalent of three round trips to the Moon. This remarkable bird experiences more daylight than any other creature on Earth.
Eurasian Magpie
The Eurasian magpie is one of the most intelligent animals on Earth and the first non-mammal demonstrated to recognize itself in a mirror. These bold corvids build elaborate domed nests of sticks and have a well-known attraction to shiny objects, though this reputation may be exaggerated.