Aimophila ruficeps

The rufous-crowned sparrow is a small American sparrow. This passerine is primarily found across the Southwestern United States and much of the interior of Mexico, south to the transverse mountain range, and to the Pacific coast to the southwest of the transverse range. Its distribution is patchy, with populations often being isolated from each other. Twelve subspecies are generally recognized, though up to eighteen have been suggested. This bird has a brown back with darker streaks and gray underparts. The crown is rufous, and the face and supercilium are gray with a brown or rufous streak extending from each eye and a thick black malar streak.

Aimophila ruficeps

Jerry Ting · CC0 · 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
rufous-crowned sparrowPBDB
Sits inside
AimophilaPBDB
Diet
carnivorePBDB, for Coelurosauria
Life habit
ground dwelling, solitaryPBDB, for Theropoda
Motility
actively mobilePBDB, for Theropoda
Environment
terrestrialPBDB, for Theropoda

Time the record covers

At most 196 thousand years on record.

The one occurrence read is dated to somewhere between 210 ka and 14 ka, which is a dating window rather than a span.

Pleistocene — about 1 of 1 occurrencePleistoceneHolocene — about 0 of 1 occurrence213 ka–189 ka Mya — about 0.1 occurrences189 ka–166 ka Mya — about 0.1 occurrences166 ka–142 ka Mya — about 0.1 occurrences142 ka–118 ka Mya — about 0.1 occurrences118 ka–95 ka Mya — about 0.1 occurrences95 ka–71 ka Mya — about 0.1 occurrences71 ka–47 ka Mya — about 0.1 occurrences47 ka–24 ka Mya — about 0.1 occurrences24 ka–0 Mya — about 0.0 occurrences710 ka0 Mya

1 occurrence of Aimophila ruficeps on record, most of them in the Pleistocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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.

Aimophila ruficeps and its relatives

Pleistocene

Where Aimophila ruficeps and its relatives were recorded in the Pleistocene.

Found in the same rock

9 taxa

The Paleobiology Database records 1 site for Aimophila ruficeps, and this reads all of them. The number is how many of those sites it was catalogued from too.

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 the Paleobiology Database's own record for the work.

Media and terms

Media content1

Picture of Aimophila ruficeps

Credit
Jerry Ting
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Aimophila ruficeps was found in MorphoSource and Sketchfab.

Smithsonian Open Access was 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 itAimophila through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Cassin 1852)