Basic Information
Scientific classification
- Chinese name: Swallow-like bird
- Scientific name: Bulweria bulwerii, Aestrelata bulweri, Bulwer's Petrel
- Classification: Waterfowl
- Family and genus: Procellariiformes, Procellariiidae, Procellarii
Vital signs data
- Body length: 26-29 cm
- Weight: No verification information available.
- Lifespan: No verification data available.
Significant features
It resembles a giant petrel with long wings and a long tail, its body is dark brown, and its underparts are lighter in color.
Distribution and Habitat
Origin: Cape Verde, China, French Guiana, French Polynesia, Indonesia, Japan, Kiribati, Malaysia, Marshall Islands, Mauritania, Federated States of Micronesia, Morocco, Northern Mariana Islands, Palau, Portugal, Saint Helena, Ascension Island and Tristan da Cunha, Senegal, Spain (Canary Islands), East Timor, United States (Hawaii Islands).
Migratory birds: Australia, Barbados, France, India, Ireland, Italy, Maldives, Netherlands, South Africa, Sri Lanka, Trinidad and Tobago.
Sources uncertain: American Samoa, Anguilla, Antigua and Barbuda, Brazil, British Indian Ocean Territory, Cambodia, Christmas Island, Cocos (Keeling) Islands, Cook Islands, Ivory Coast, Dominican Republic, Ecuador, Fiji, French Southern Territories, Gambia, Guadeloupe, Guinea, Guinea-Bissau, Guyana, Liberia, Madagascar, Martinique, Mauritius, Mexico, Nauru, Papua New Guinea, Philippines, Pitcairn, Reunion, Saint Lucia, Samoa, São Tomé and Príncipe, Seychelles, Sierra Leone, Solomon Islands, Somalia, Suriname, Thailand, Tokelau, Tonga, Tuvalu, Vietnam, Wallis and Futuna Islands, Western Sahara.
The ternate petrel is a temperate seabird that spends most of its time at sea except during the breeding season. During the breeding season, it inhabits coastal areas, small islands, and the waters near them. It often inhabits cliffs, rocky outcrops at the foot of mountains, and even sandy beaches.
Appearance
The Common Warbler is an active, small seabird that resembles a petrel in appearance. It has long, narrow wings that curve forward; a long, narrow, wedge-shaped tail; a short, thick bill; and a short nasal tube located at the base of the bill. Its head, neck, and entire upper body are dark brown; the large wing coverts are pale brown, forming a distinct pale wing band; the underparts are paler, mostly brownish-black; the underwing coverts and axillaries are also dark brown.
The iris is dark brown, the nasal tube is blue, the mouth is black, the corners of the mouth are pink and adorned with blue; the inside of the feet is pinkish-grey, the outside is black, and the webs are black.
Size measurements: Body length 260-290 mm; wings 199-212 mm; bill 22-23 mm; tail 105-119 mm; tarsus 27-29 mm.
Detailed introduction
The Bulwer's Petrel (scientific name: Bulweria bulwerii) is a small, gull-like seabird with no subspecies.
Most terns are resident birds, with a few migrating to the northern and southern seas outside the breeding season. They are gregarious and often move in flocks, usually very active, spending long periods of time flying over the sea. When flying, their wings are bent forward, their heads are slightly lowered, and their tails often briefly spread out in a fan shape. Their flight is more powerful than that of petrels, often characterized by frantic swooping and circling high in the air. They mainly feed on various small fish. During the breeding season, they emit a low "chuff" call.
The breeding season for terns is from June to August. They breed in flocks on barren coastlines and islands in the sea. They nest on the ground of offshore islands, under rocks, in caves on coastal cliffs, or in crevices in rock walls. They also dig burrows in soft mud or sand. Each clutch contains one egg, which is oval, white, and measures 40-47 mm x 30-33 mm, with an average size of 43 x 31 mm.
Listed as Least Concern (LC) in the IUCN Red List of Threatened Species 2016 ver 3.1.
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