Mareca sibilatrix

The Chiloé wigeon, also known as the southern wigeon, is one of three extant species of wigeon in the genus Mareca of the dabbling duck subfamily. This bird is indigenous to the southern part of South America, including the Chiloé Archipelago, from which it gets its name. In its native range, it is called the pato overo or pato real, although the latter name also refers to the Muscovy in the wild. Its specific epithet, sibilatrix, means 'whistler', referring to the bird's call.

Mareca sibilatrix

Charles J. Sharp · CC BY-SA 4.0 · via Wikipedia/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.

On record

Recorded, not inferred
Also called
Chiloe wigeonPBDB
Sits inside
MarecaPBDB
Diet
herbivorePBDB, for Anseriformes
Life habit
volantPBDB, for Anseriformes
Motility
actively mobilePBDB, for Theropoda
Environment
terrestrialPBDB, for Theropoda

Time the record covers

At most 389 thousand years on record.

The one occurrence read is dated to somewhere between 400 ka and 11.7 ka, which is a dating window rather than a span.

Pleistocene — about 1 of 1 occurrencePleistoceneHolocene — about 0 of 1 occurrence420 ka–390 ka Mya — about 0.0 occurrences390 ka–360 ka Mya — about 0.1 occurrences360 ka–330 ka Mya — about 0.1 occurrences330 ka–300 ka Mya — about 0.1 occurrences300 ka–270 ka Mya — about 0.1 occurrences270 ka–240 ka Mya — about 0.1 occurrences240 ka–210 ka Mya — about 0.1 occurrences210 ka–180 ka Mya — about 0.1 occurrences180 ka–150 ka Mya — about 0.1 occurrences150 ka–120 ka Mya — about 0.1 occurrences120 ka–90 ka Mya — about 0.1 occurrences90 ka–60 ka Mya — about 0.1 occurrences60 ka–30 ka Mya — about 0.1 occurrences30 ka–0 Mya — about 0.0 occurrences900 ka0 Mya

1 occurrence of Mareca sibilatrix on record, most of them in the Pleistocene. The Paleobiology Database records this as a living group. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.

When

1 occurrences

These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.

Found in

1 formation

Pampean — 38.20°S, 59.12°W

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The named rock units Mareca sibilatrix has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Mareca sibilatrix and its relatives

Pleistocene

Where Mareca sibilatrix and its relatives were recorded in the Pleistocene.

Found in the same rock

40 taxa

The Paleobiology Database records 1 site for Mareca sibilatrix, and this reads all of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.

This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.

Entered from

1 reference

Each of the 1 occurrence read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Mareca sibilatrix

Credit
Charles J. Sharp
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

No 3D scan of Mareca sibilatrix was found in Sketchfab.

Smithsonian Open Access and MorphoSource were not reached for this taxon, so this list is what the others held rather than everything there is.

The description on this site

Licence
CC BY-SA 4.0

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itMareca through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Poeppig 1829)