Deep Memory/ Clues to a deeper past
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Research lead · Birds & birdmen

A birdman on a small tablet

A North American lead, with the image’s status kept in view.

2 groups · 2 registered records · reviewed 2026-09-19

Motif families: Birds & human forms

Mississippian Cahokia

Mississippian bird imagery

The Cahokia tablet photographed on display, with the modern illustration kept as a second view.

Why these examples belong together

A lead group awaiting a collection record and a dated context.

A small stone tablet on a museum mount, incised with a beaked human profile above a wing
object · Cahokia

Cahokia birdman tablet

A photograph of the object now replaces the modern illustration; the drawing is kept as a second view. Mississippian context; accession and dating records remain to be checked.

Dates, sources & image record
  • Date unresolvedunresolved · Mississippian context; object-level collection and dating records remain to be checked.

photograph · Paul Sableman. CC BY 2.0. Image record
Cropped from the source photograph to the tablet and its mount, then reduced to 1000 px wide. No other change.

The project’s illustrated comparison archive · Birdman Tablet, Cahokia Mounds State Historic Site (photograph)

Another view of this example
Modern illustration of the Cahokia birdman tablet
Modern illustration of the Cahokia birdman tablet
Herb Roe, www.chromesun.com · CC BY-SA 3.0 · Image record
Existing source image; displayed uncropped. No generated reconstruction.
Rapanui traditions

Orongo · birdman and rounded form

The carved boulder in a museum record and an early photograph.

Why these examples belong together

One physical object, even when several photographs are consulted.

The Orongo birdman boulder, photograph published in 1919
object · Orongo · Rapa Nui

Orongo birdman boulder

Museum number Oc1920,0506.1. A rounded form is close to the bent hand; the source reads it as an egg.

Dates, sources & image record
  • c. 1750–1875 CEcatalogue estimate · Approximate museum date; not direct dating of the motif. Date source

historical photograph · Katherine Routledge / Mana Expedition. Public domain. Image record
Existing source image; displayed uncropped. No generated reconstruction.

Birdman boulder · Oc1920,0506.1 · The Mystery of Easter Island (1919)

The proposed connection

What makes it a question?

The circulated illustration suggests a distant bird-human parallel. Fine comparison must wait for an independently identified primary image.

The earlier atlas assembled this lead. An external first proposer and museum object record still need tracing.
The project’s illustrated comparison archive

Look closely

What appears to correspond

  • Both presentations suggest avian and human elements.
Keep in the frame

What differs or remains uncertain

  • Both are now shown in photographs; the modern illustration of the tablet is kept as a second view, and the boulder's only image remains a 1919 photograph.
  • A small tablet and a relief boulder have different compositional constraints.
Transmission check

Transmission not yet assessed

The comparison is not yet identified or dated well enough to exclude ordinary transmission, later borrowing or an image-selection effect.

What would move this forward

  • Acquire a museum accession record and dated context for the tablet.
  • Compare the photograph with the illustration to see what the drawing restores or emphasises.
Follow the evidence

Sources & scope

Provisional editorial record; no independent specialist sign-off. Status describes review depth, not the probability of a historical connection.

  1. project · Deep Memory

    The project’s illustrated comparison archive

    Records comparisons assembled from this repository and supplied material. An external first proposer has not been traced for every pair.

  2. museum · British Museum / Google Arts & Culture

    Birdman boulder · Oc1920,0506.1

    Orongo provenance, birdman with rounded object, and an approximate 1750–1875 catalogue date.

  3. photograph · Paul Sableman

    Birdman Tablet, Cahokia Mounds State Historic Site (photograph)

    A photograph of the object on display, replacing a modern illustration. The uploader's caption is not an excavation or accession record.

  4. primary-text · Katherine Routledge

    The Mystery of Easter Island (1919)

    Figures 110 and 112 preserve photographs of the Orongo rock and birdman boulder. Publication dates are not carving dates.