Calidris fuscicollis
Silhouette: Edwin Price · PhyloPic
In 3 days ~30% in a week ~60%
The white-rumped sandpiper (Calidris fuscicollis) is a small migratory shorebird that breeds in the northern tundra of Canada and Alaska. This bird can be difficult to distinguish from other similar tiny shorebirds; these are known collectively as "peeps" or "stints". In flight, it is more easily picked out by its namesake white rump.
The white-rumped sandpiper is a relatively small bird measuring only 15–18 cm (5.9–7.1 in), with a wingspan of 36–38 cm (14–15 in). The top of its body is a dull grey-brown colour and it has a white eye stripe. Its beak is of medium length, thin and dark, and its legs are very dark. This bird is often mistaken with many similar-looking sandpipers that live in its range or along its migration path.
The plumage is much less distinct during the winter; however, during all seasons males and females remain similar in their appearance. In adult breeding plumage, the crown and face have a brownish tinge. The supercilium is pale, there are black feathers on the back and there are grey edges on the wing coverts. The breast and flanks are streaked and the underparts are white. In adult winter plumage, the upperparts are a dark grey and at the... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Península Valdés | 🇦🇷 Argentina | |
| 2 | Caroni Swamp | 🇹🇹 Trinidad and Tobago | |
| 3 | Isla del Coco National Park | 🇨🇷 Costa Rica | |
| 4 | El Impenetrable National Park | 🇦🇷 Argentina | |
| 5 | Ría Lagartos Biosphere Reserve | 🇲🇽 Mexico | |
| 6 | Celestún Biosphere Reserve | 🇲🇽 Mexico | |
| 7 | Gros Morne National Park | 🇨🇦 Canada | |
| 8 | Tierra del Fuego National Park | 🇦🇷 Argentina | |
| 9 | Arrecifes de Cozumel National Park | 🇲🇽 Mexico | |
| 10 | Padre Island National Seashore | 🇺🇸 United States | |
| 11 | Amacayacu National Natural Park | 🇨🇴 Colombia | |
| 12 | Iberá National Park | 🇦🇷 Argentina | |
| 13 | Acadia National Park | 🇺🇸 United States | |
| 14 | Bastimentos Island National Marine Park | 🇵🇦 Panama | |
| 15 | Tortuguero National Park | 🇨🇷 Costa Rica | |
| 16 | Parque Estadual Encontro das Águas | 🇧🇷 Brazil | |
| 17 | La Amistad International Park (Panama) | 🇵🇦 Panama | |
| 18 | Sian Ka'an Biosphere Reserve | 🇲🇽 Mexico | |
| 19 | Point Pelee National Park | 🇨🇦 Canada | |
| 20 | Everglades National Park | 🇺🇸 United States | |
| 21 | Merritt Island National Wildlife Refuge | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Santa Cruz de la Sierra | 🇧🇴 Bolivia | |
| 2 | Montevideo | 🇺🇾 Uruguay | |
| 3 | Panama City | 🇵🇦 Panama | |
| 4 | Rio de Janeiro | 🇧🇷 Brazil | |
| 5 | Santos | 🇧🇷 Brazil | |
| 6 | Havana | 🇨🇺 Cuba | |
| 7 | Asuncion | 🇵🇾 Paraguay | |
| 8 | Boston | 🇺🇸 United States | |
| 9 | New York City | 🇺🇸 United States | |
| 10 | Caracas | 🇻🇪 Venezuela |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | National Zoological Park | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a White-rumped Sandpiper sighting in Península Valdés on a given day, based on 60 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 52nd most-seen of the 96 birds we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
March and May
In those months about 30% of wildlife watchers report a White-rumped Sandpiper in Península Valdés on a given day, against about 10% in August to February, the lowest months. June and July have too few records to rate.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most White-rumped Sandpiper sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 21 parks where we can rate White-rumped Sandpiper sightings, Península Valdés has the highest daily chance: about 10%. Next come Caroni Swamp (Trinidad and Tobago, about 10%) and Isla del Coco National Park (Costa Rica, under 5%).
Same genus: Calidris
The closest relatives of the White-rumped Sandpiper that you can see in Península Valdés (genus Calidris, Calidris Sandpipers) are Baird's Sandpiper (about 20%) and Sanderling (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the White-rumped Sandpiper is recorded against all the birds logged in Península Valdés (60 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.
