Northern Gannet vs Nazca Booby
Morus bassanus so với Sula granti
Side-by-Side Comparison
| Thuộc Tính | Northern Gannet | Nazca Booby |
|---|---|---|
| Tên Khoa Học | Morus bassanus | Sula granti |
| Bộ | Suliformes | Suliformes |
| Họ | Sulidae | Sulidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | 93,0 cm (36.6 in) | — |
| Chiều Dài Sải Cánh | 180,0 cm (70.9 in) | 83,4 cm (32.8 in) |
| Khối Lượng | 3000,0 g (105.82 oz) | 1752,5 g (61.82 oz) |
| Chế Độ Ăn | Shoaling fish, especially mackerel, herring, and capelin. Plunge-dives from heights of 30 meters at speeds … | -- |
| Số Trứng | 1 | 1-2 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Northern Gannet
Open ocean and coastal waters. Breeds in dense colonies on steep rocky islands and sea stacks.
Song & Call Comparison
Northern Gannet
Loud, harsh 'urrah-urrah' grunting and croaking at breeding colonies on sea stacks. Also gives a softer 'karrr' in flight. Large colonies are extremely noisy during the breeding season.
Nazca Booby
Geographic Range & Migration
Northern Gannet
North Atlantic, breeding from Newfoundland and Gulf of St. Lawrence to Norway, Iceland, and Britain. Winters at sea south to the tropics.
Nazca Booby
Tình Trạng Bảo Tồn
Northern Gannet
Nazca Booby
How to Tell Them Apart
Northern Gannet
Brilliant white body with black wingtips and a golden-yellow wash on the head and nape. Blue-grey bill with dark lines and pale blue eye-ring.
Long, straight, pointed, pale blue-grey bill with serrated edges
Nazca Booby
About These Birds
Northern Gannet
The northern gannet is a spectacular plunge-diver, folding its two-meter wingspan into an arrow shape to hit the water at up to 100 km/h. Air sacs under the skin and a reinforced skull protect it from the impact. Bass Rock in Scotland hosts over 150,000 gannets, the largest single colony of any seabird in the world.
Nazca Booby
81–92 cm. White with black wingtips; orange-yellow bill; orange orbital ring; grey feet. Breeds Galapagos Islands and Malpelo Island. Similar to Masked Booby; distinguished by bill colour and range. Feeds on flyingfish and squid; spectacular aerial plunge-dives.