What is "poliocephalus"

' Poliocephalus ' is a small genus of birds in the grebe family. Its two members are found in Australia and New Zealand. They are:

• Hoary-headed grebe, ''Poliocephalus poliocephalus ''
• New Zealand grebe, ''Poliocephalus rufopectus ''

Poliocephalus and its counterparts poliocephala and poliocephalum are Greek words meaning 'grey-headed'. Poliocephalus is the name for a genus of grebes, while Poliocephala is the name for a genus of flies. The two words are often used as the second word of a binomial name.

Species names poliocephalus or poliocephala could refer to any of the following: