Balaenicipitidae


Balaenicipitidae is a family of birds in the order Pelecaniformes, although it was traditionally placed in Ciconiiformes. Its closest relative is the Hamerkop, which belongs to another family.
It has the following genera:
A sharp hooked tip to the upper beak
A furrow in the upper beak below the nasal openings
An ossified septum
Vestigial or absent expansor secundariorum muscle