Parent: Tachybaptus (Least grebes)

└─ Tachybaptus ruficollis (Little grebe)

└─── Tachybaptus ruficollis albescens

└─── Tachybaptus ruficollis capensis

└─── Tachybaptus ruficollis cotabato

└─── Tachybaptus ruficollis iraquensis

└─── Tachybaptus ruficollis philippensis

└─── Tachybaptus ruficollis poggei

└─── Tachybaptus ruficollis ruficollis