Parent: Podicipedidae (Grebes)

└─ Tachybaptus (Least grebes)

└─── Tachybaptus dominicus (Least grebe)

└─── Tachybaptus novaehollandiae (Australasian grebe)

└─── Tachybaptus pelzelnii (Madagascar grebe)

└─── Tachybaptus ruficollis (Little grebe)

└─── Tachybaptus rufolavatus (Alaotra grebe)

└─── Tachybaptus tricolor (Tricolored grebe)