Calonectris edwardsii
In 3 days ~10% in a week ~20%
The Cape Verde shearwater (Calonectris edwardsii), or cagarra locally, is a medium-large shearwater, a seabird in the petrel family Procellariidae. It is endemic to the Cape Verde archipelago of Macaronesia in the Atlantic Ocean, off the coast of West Africa.
The Cape Verde shearwater was originally described in 1883 by Émile Oustalet as a full species. It was later lumped as a subspecies of Cory's shearwater but has since been separated again, by Cornelis Hazevoet in 1995, as a distinct species.
The Cape Verde shearwater has a slim, dark bill, with head and upperparts darker than Cory's. The flight is more typically shearwater-like than Cory's, with stiffer and more rapid wing beats. The overall appearance, compared with Cory's, is of a smaller, slimmer and more angular bird.
The shearwaters breed only within the Cape Verde Islands. The largest colonies are on the islands of Brava, Branco and Raso, though the species also breeds in smaller numbers on other islands in the archipelago. Though their pelagic distribution and movements are not well known, they are regularly seen around the islands in the breeding season. After the... Wikipedia →
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Cape Verde · 2022
© Nicolas Martinez · XC718760 · CC BY-NC-SA 4.0
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Dakar | 🇸🇳 Senegal |
Rare
Under 5% of wildlife watchers report a Cape Verde Shearwater sighting in Dakar on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 135th most-seen of the 152 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.
October and November
In those months about 10% of wildlife watchers report a Cape Verde Shearwater in Dakar on a given day, against under 5% in December to September, the lowest months.
Only Dakar, in our data
Dakar is the only city on Wallace's Line with enough records to rate Cape Verde Shearwater sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Procellariidae
The closest relatives of the Cape Verde Shearwater that you can see in Dakar (family Procellariidae, Shearwaters and Petrels) are Sooty Shearwater (about 30%), Manx Shearwater (about 20%) and Great Shearwater (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Cape Verde Shearwater is recorded against all the birds logged in Dakar (6 verified sightings), 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.
