It's pronounced "ja-RIG-eny." This is an adult of the nominate race endemic to New Caledonia and characterized by more extensive white spotting on its tail. This species is the exclusive host of the brood parasite, Shining Bronze-cuckoo. Both the parasite and the host have evolved polymorphic dark and light colored chicks. This polymorphism might have evolved first in the gerygone as a defense against the cuckoo and subsequently in the cuckoo to counteract this defense.