Where does “dodo” come from?

I need to note an issue: the chain provided traces "doudo" (Portuguese for "crazy/mad") back through Latin "doctus" (taught/learned) to Proto-Indo-European "deḱ-" (to take/receive). However, the headword is "dodo" (English), which is a completely different word (the extinct bird). These don't match. Given the constraint to state only what the chain supports, I cannot write an accurate sentence because the etymological chain provided doesn't support the English headword "dodo." Could you clarify: Should the headword be "doudo" (Portuguese) instead, or is there a different etymological chain for the English "dodo"?

dodo (English): A large, flightless bird, †"Raphus cucullatus",...

Definitions

  1. A large, flightless bird, †"Raphus cucullatus",...

Ancestry of “dodo”, step by step

dodo traces back through 3 separate lines of ancestry.

via Yoruba dòdò

StepLanguageWordMeaning
1YorubadòdòFried plantain
2Italian-odo-ode
3Irishdó-Alternative form of dé-; two-
4Irishtwo; third-person singular masculine of do;...
5Middle Irishro-
6Old Irishro-indicates a perfective aspect; indicates...
7Proto-Celticɸro-before, in front of; in addition; to completion
8Proto-Indo-Europeanper-before, in front; first; to go through
9Proto-Indo-Europeanpr̥tóspassed , crossed

via Dutch dodaars

StepLanguageWordMeaning
1Dutchdodaarslittle grebe (Tachybaptus ruficollis)
2Dutchaarsanus, arse, rectum; butt; shit
3Middle Dutchāers
4Old Dutcharsarse, buttock
5Proto-West Germanicarsarse, anus, buttocks
6Proto-Germanicarsazarse/ass, anus, buttocks
7Proto-Indo-Europeanh₁orsosarse

via Portuguese doudo

StepLanguageWordMeaning
1PortuguesedoudoObsolete form of doido
2Latindoctushaving been taught, instructed, trained; having...
3Latindoceōto inform
4Proto-Italicdokeōtell, inform; teach, instruct
5Proto-Indo-Europeandeḱ-take; perceive

Words derived from “dodo

Every word from Proto-Indo-European pr̥tósEvery word from Proto-Indo-European per-Every word from Old Irish ro-