Have taxonomic parents as well as parent IDs in the API

it’s not clear exactly what you’re looking for here, but if you’re trying to visualize the entire iNat taxonomic tree, then i think you should just get the entire taxonomy periodically. iNat exports this periodically.

this may also be relevant: https://forum.inaturalist.org/t/add-ancestor-rank-level-to-get-observations-response-api/38992/4.