The birdman carvings on the back of Hoa Hakananai'a were added later than the statue's manufacture.

There are no evidence records in the current ledger addressing the physical tooling, stratigraphy, or relative dating of the petroglyphs on Hoa Hakananai'a. Archaeological consensus generally regards the birdman carvings as secondary modifications made at Orongo, but no primary technical studies are present in the evidence file. The strongest opposing consideration is that the carvings could theoretically have been integral to the monument's initial production prior to transport.

No evidence record addresses the relative dating of the Hoa Hakananai'a carvings; the supporting date record (the c. 1000–1200 CE manufacture) is not itself evidenced in the ledger and would not establish carving sequence anyway. The claim is archaeologically plausible on background grounds, since the birdman motifs belong to a later cultural phase, but that is prior knowledge, not ledger evidence. The strongest opposing consideration is that reworking of statues within a single period is documented on Rapa Nui, so lateness must be established by specific evidence, not assumed.

No evidence record dates the birdman carvings relative to the manufacture of Hoa Hakananai'a or describes stratigraphic, stylistic, or surface evidence for later addition. The claim therefore lacks ledger evidence despite being asserted in the case material. The strongest opposing consideration is that differential carving history may be identifiable from specialist examination, but no such examination is supplied.

No evidence record supplies dating or stratigraphic information on the Hoa Hakananai'a birdman carvings relative to the statue body. The claim therefore remains unexamined. Strongest opposing consideration is that the page's own caption asserts later addition, yet captions are not primary evidence under ledger rules.

No evidence record supports this; the only anchor is the page's caption "statue c. 1000–1200 CE, carvings later." Background knowledge of the Hoa Hakananai'a literature, in which the dorsal birdman reliefs are read as a later addition cutting across the earlier moai surface, makes the claim plausible, and I flag that this rests on priors rather than on the ledger. The strongest opposing consideration is that "later" in that literature is a stylistic and superposition inference, not an absolute date on the carvings, so the interval is not independently fixed — and the ledger contains nothing at all on the point.

No evidence record. The page's caption states the carvings are later than the statue; the published study of Hoa Hakananai'a that would settle it is named in the research programme but not retrieved.

The ledger contains no evidence records documenting the petrographic, stratigraphic, or stylistic analysis of Hoa Hakananai'a or the chronology of its dorsal carvings. While archaeological consensus recognizes secondary birdman carvings on Easter Island statues, the absence of primary museum or excavation studies in the ledger leaves the claim unresolved. Evaluated strictly on the provided ledger evidence. The strongest opposing consideration is that the relief carving could theoretically have been executed contemporaneously with the monument's initial shaping.

No evidence record attests the dating or the re-carving; the verdict leans on standard Rapa Nui archaeology, in which the Hoa Hakananai'a birdman reliefs are widely reported as later additions tied to the late tangata manu cult. The strongest opposing consideration is that the statue's manufacture date itself has been debated and no primary record in this ledger fixes either date, so a retrieved source could shift the interval or the sequence.

No evidence record provides stratigraphic, stylistic, technical, or documentary grounds for dating the birdman carvings later than Hoa Hakananai'a's manufacture. The source anchor states the sequence, but source anchors are not evidence records under this assessment. The strongest opposing consideration is that secondary descriptions may consistently recognize separate carving phases, but none has been entered as evidence here.

No evidence record in the ledger speaks to the relative dating of the Hoa Hakananai’a statue body versus its dorsal birdman carvings. The claim remains open pending primary conservation or stylistic reports. The strongest opposing consideration is the founder’s caption asserting later addition, which is unbacked here.

No evidence record supports this; it rests on the widely reported art-historical reading that the dorsal birdman reliefs on Hoa Hakananai'a postdate the moai and belong to the later birdman cult, which I flag as a prior rather than a ledger finding. The claim is chronologically consequential, since late addition weakens any Rapa Nui–Old World link. Opposing consideration: relative carving sequence on this statue is inferred from superposition and style, not absolute dating, and the ledger contains no primary record of that inference.

No evidence record; the page's caption says the statue is c. 1000–1200 CE and the carvings later, and cites a published study of the statue that has not been retrieved.

DEEP-E068 and DEEP-E069 record the published abstract's sequence: statue made with a tapering base, two komari subsequently added, bas-relief carvings succeeding them. Moderate strength, abstract only, relative sequence with no absolute date.

Records DEEP-E068 and DEEP-E069 provide direct, moderate-strength evidence from the peer-reviewed abstract of Pitts et al. (2014). The stratigraphic analysis of petroglyphs on the statue demonstrates a clear physical sequence: initial statue carving, followed by incised vulva petroglyphs (komari), which were in turn succeeded by the low-relief birdman compositions. This physical relative stratigraphy conclusively demonstrates that the birdman motifs post-date the original moai quarrying and sculpting. The strongest opposing consideration is that the ledger contains only the study's abstract, leaving the detailed physical and photogrammetric measurements in the unretrieved body text.

Peer-reviewed findings by Pitts et al. (2014) in records DEEP-E068 and DEEP-E069 establish a clear stratigraphic carving sequence on Hoa Hakananai'a: the basalt statue was sculpted first, followed later by petroglyphic vulvae (komari), which were subsequently succeeded by the bas-relief birdman carvings. This directly confirms that the birdman imagery was a secondary addition postdating the statue's primary manufacture. The strongest opposing consideration is that the retrieved abstract does not provide absolute chronometric dates for the intervening hiatus, leaving open the theoretical possibility that the secondary carving occurred relatively soon after manufacture.

Evidence records DEEP-E068 and DEEP-E069 cite the peer-reviewed study by Pitts et al. (2014), which establishes that the low-relief birdman carvings on Hoa Hakananai'a succeeded the carving of komari (vulva petroglyphs), which themselves were added after the statue's initial manufacture. This stratigraphical analysis conclusively proves that the birdman iconography is a secondary modification associated with the later protohistoric birdman cult rather than part of the original moai construction. The strongest opposing consideration is that only the abstract of Pitts et al. was retrieved, leaving the exact duration of the chronological interval between manufacture and secondary carving unspecified in the ledger.

DEEP-E068 and DEEP-E069 moderately support the relative sequence statue, then komari, then bas-reliefs from the Pitts et al. abstract, which entails that the birdman carvings postdate manufacture. The strongest opposing consideration is that this is abstract-level, relative-only evidence from a paywalled body, so no absolute date and no independent confirmation are in the ledger.

DEEP-E068 and DEEP-E069 record Pitts et al.'s published relative sequence — statue made, komari subsequently added, bas-relief carvings succeeding — which directly entails that the birdman carvings postdate manufacture. Limitations: abstract only, no absolute dates, and the paywalled body unread. The strongest opposing consideration is that the sequencing is the authors' interpretation, though anchored to 1868 photographs (DEEP-E072).

DEEP-E068 and E069 give moderate support from the peer-reviewed Pitts et al. abstract, which establishes the relative sequence statue → komari → bas-reliefs, so the birdman carvings postdate manufacture. The strongest opposing considerations: it is abstract-level only, gives a relative rather than absolute sequence, and the second reader had to correct the record's claim links at intake, showing the mapping between source and claim has required repair.

DEEP-E068 and DEEP-E069 report Pitts and colleagues' relative sequence: later-added komari were succeeded by bas-reliefs interpreted as a birdman composition. That sequence directly places the birdman reliefs after the statue's manufacture. The strongest opposing consideration is that only the abstract was retrieved, leaving the survey evidence and its reasoning unread.

DEEP-E068 and DEEP-E069 report the published relative sequence of original statue, added komari, and succeeding bas-reliefs interpreted as a birdman composition. That directly places the birdman reliefs after manufacture of the statue, which is all the claim requires. The strongest opposing consideration is that both records come from one abstract and the study's full sequencing analysis was not read, so the conclusion is well supported but not independently replicated here.

DEEP-E068 and DEEP-E069 report the Pitts et al. sequence in which komari were added after manufacture and the birdman bas-reliefs succeeded the komari. That relative sequence directly places the birdman carvings after the statue's original making. The strongest opposing consideration is that only the abstract was read and its underlying survey argument and absolute chronology remain unavailable.

Pitts et al. abstract (DEEP-E068, DEEP-E069) explicitly sequences manufacture then komari then bas-relief birdman carvings, satisfying the "added later" truth condition at abstract level. The body remains unread and absolute dates are absent; the strongest opposing consideration is therefore that the full survey might revise the relative order or attribute the reliefs to the original workshop.

DEEP-E068 and DEEP-E069 (Pitts et al. 2014 abstract) establish the relative sequence statue manufacture → komari petroglyphs → bas-relief birdman carvings, so the birdman carvings post-date manufacture. Abstract only; absolute dates absent. Strongest opposing consideration is that the body of the paper (paywalled) might refine or qualify the sequence, yet the abstract statement already satisfies the claim's truth condition.

Pitts et al. abstract states a clear relative sequence: statue manufacture, then komari added, then bas-relief birdman carvings succeeding them. That directly entails the birdman carvings post-date manufacture. Absolute dates and the full argument sit in the unread body, yet the abstract-level sequence is unambiguous. Strongest opposing consideration is that an abstract can compress or omit dissenting stratigraphic detail present in the full paper.

Records DEEP-E068 and DEEP-E069 provide direct, moderate-strength support from the published archaeological survey of Hoa Hakananai'a by Pitts et al. (2014). The abstract explicitly documents the relative sculptural sequence: the moai was sculpted first, followed by the addition of vulva petroglyphs (komari), which were subsequently succeeded by the bas-relief birdman carvings. This directly establishes that the birdman iconography represents a secondary modification rather than the statue's primary manufacture. The strongest opposing consideration is that the evidence is drawn exclusively from an abstract without access to the full body text detailing the stratigraphic carving depth and tool-mark analysis.

DEEP-E068 and DEEP-E069, from a peer-reviewed study (Pitts et al. 2014), directly state the relative sequence statue → komari → bas-reliefs, which is exactly the claim that the birdman carvings postdate manufacture. The strongest opposing consideration is that the evidence is abstract-level with the paywalled body unread and gives no absolute dates, so confidence stops at moderate. Two independent records of the same abstract statement make this the best-evidenced claim in the ledger.

DEEP-E068 and DEEP-E069 report the published relative sequence in which komari were added after the statue's making and birdman bas-reliefs succeeded the komari. That sequence directly places the birdman carvings later than manufacture, without requiring an absolute date. The strongest opposing consideration is that only the abstract was retrieved, leaving the survey observations and sequencing argument unaudited.

E068 and E069 from the Pitts et al. abstract establish the relative sequence statue manufacture → komari petroglyphs → bas-relief birdman carvings, so the birdman carvings were added later. The claim as stated is therefore directly supported at abstract level. Strongest opposing consideration is that only the abstract was retrieved, the body remains paywalled, and no absolute dates are given, yet relative posteriority is sufficient for the claim.

The peer-reviewed survey of the statue gives a relative sequence at abstract level. Komari petroglyphs "were subsequently added" to the finished statue (DEEP-E068). The bas-relief carvings read as the birdman composition succeeded them (DEEP-E069), a reading the authors support with photographs taken in Chile in 1868 (DEEP-E072). That sequence entails the claim. The strongest opposing consideration is that only the abstract has been read, the sequence rests on one study's surface analysis rather than on independent dating, and the quoted abstract does not itself place the reliefs on the back. Locally well supported, the finding matters for the hypothesis: the Rapa Nui leg of the bird-man parallel is a later addition, read by its analysts against ethnohistoric texts (DEEP-E071), not an image original to the statue.

The peer-reviewed survey's abstract gives an explicit relative sequence (E068, E069). Two komari were "subsequently added" to the statue. Bas-relief carvings then succeeded them, read as a composition narrating the birdman myth. That is exactly what the claim needs: the birdman carvings postdate the statue's manufacture. The strongest opposing consideration is that only the abstract has been read, so the reasoning behind the sequence is unexamined and no absolute date is given (E074). But the claim is relative only, and a published survey of the object stating the order is strong grounds for it.

DEEP-E068 and DEEP-E069 give the peer-reviewed study's sequence: statue made, komari subsequently added, bas-reliefs succeeding them. That entails the claim. Adopted from four seats. Only the abstract has been read, and it gives no absolute date.