The whalebill is a stork

@article{Feduccia1977TheWI,
  title={The whalebill is a stork},
  author={Alan Feduccia},
  journal={Nature},
  year={1977},
  volume={266},
  pages={719-720}
}
THE avian order Ciconiiformes contains a heterogeneous assemblage of long legged, long necked birds which have traditionally been classified together because of superficial resemblance. The order usually contains the storks, ibises, herons and two rather aberrant birds, the whalebill (Balaeniceps rex) and the hammerkop (Scopus umbretta), which are placed in monotypic families, the Balaencipitidae and Scopidae, respectively. The evolutionary relationships among the members of the Ciconiiformes… 

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  • G. Mayr
  • Biology
    Journal für Ornithologie
  • 2006
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References

A Model for the Evolution of Perching Birds

The Eocene of North America was a period during which structurally primitive piciform birds were the predominant, if not the only, perching birds, and new evidence indicates that.