The bird family Petroicidae includes 49 species in 19 genera. All are endemic to Australasia: New Guinea, Australia, New Zealand and numerous Pacific Islands as far east as Samoa. For want of an accurate common name, the family is often called the Australasian robins. Within the family the species are known not only as robins but as scrub-robins and flyrobins. They are, however, only distantly related to the Old World family Muscicapidae (to which other species with such names belong) and the monarch flycatchers (Monarchidae).