Calonectris leucomelas
Silhouette: Sheatherius · PhyloPic
In 3 days ~10% in a week ~20%
The streaked shearwater (Calonectris leucomelas) is a species of seabird in the petrel family Procellariidae. It is native to the Western Pacific and ranges from Japan to Australia. This shearwater has broad wings with a brown upperside and white underwings. The head and neck are flecked white to almost complete white. The face and underparts are all white. The bill is grey to pink with a dark tip while the feet are pinkish-grey.
Streaked shearwaters have a body length (from tip of bill to end of tail feathers) of 45 to 52 centimetres (18 to 20 in) and a wingspan between 103 and 113 centimetres (41 and 44 in). This species is pelagic, but is also found in inshore waters. It occurs in the Pacific Ocean, nesting in Japan and the Korean Peninsula, predominantly on their offshore islands. After breeding, the streaked shearwater migrate south, feeding in the seas off northern New Guinea, the Arafura Sea, and the South China Sea. Calonectris leucomelas have also been reported well off the west coast of the United States, from the southern coast of India, and from New Zealand. There is also a record of a specimen collected in Wyoming. Wikipedia →
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China · 2020
© xuky · XC581448 · CC BY-NC-SA 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Raja Ampat | 🇮🇩 Indonesia |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Streaked Shearwater sighting in Raja Ampat on a given day, based on 55 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 131st most-seen of the 200 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
March and October–November
In those months about 10% of wildlife watchers report a Streaked Shearwater in Raja Ampat on a given day, against under 5% in April–September and December–February, the lowest months.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Streaked Shearwater sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Raja Ampat, in our data
Raja Ampat is the only park on Wallace's Line with enough records to rate Streaked Shearwater sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Streaked Shearwater is recorded against all the birds logged in Raja Ampat (55 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
