kingfishers (genus: Megaceryle, Fig. 1) are just neotonous (juvenile-like) jabirus (genus: Jabiru, Figs. 2, 3). Certainly the jabiru, with its solid beak, ventrally convex jawline and high small naris, are not like other storks.
Megaceryle alcyon (Linneaus 1758), the extant belted kingfisher, had an enlarged beak on an enlarged skull with a shorter neck. As in parrots, by convergence, the nares have migrated back to the orbit.
Jabiru mycteria (Lichtenstein 1819) was a stork-like kingfisher nesting between the stilt/hummingbird clade and the murre/penguin clade (what variety!) Note the high small naris on the ventrally convex rostrum, as in the belted kingfisher.
If this turns out to be a case of convergence,
and it might… that will come with the addition of more taxa. We’ll see…
Lichtenstein H 1819. Archives of Natural History, Volume 35(1):88-99.
Linnaeus C 1758. Systema naturæ per regna tria naturæ, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Editio decima, reformata.