• Source: Gerygone

      • Gerygone (), the gerygones or peep-warblers, is a genus of bird in the family Acanthizidae. The genus ranges from Southeast Asia through New Guinea and Australia to New Zealand and the Chatham Islands. Most of the species are found in Australia and New Guinea; only one, the golden-bellied gerygone, has managed to cross Wallace's Line and colonise as far as Thailand, Malaysia and the Philippines.
      Gerygones are insectivores which obtain most of their food by gleaning and snatching in the foliage of trees and bushes. They are small, mostly weighing an average of 6–7 g, and show little variation in size across their range, except for the insular Chatham Islands gerygone, which is nearly twice as large as the rest of the genus.
      Their songs are described as "simple but delightful", many descending in pitch, and some species are excellent mimics. "Gerygone" means "born of sound" (Magrath 2003).


      Taxonomy


      In 1838 the English ornithologist John Gould introduced the genus Psilopus in which he placed four species. He specified the type species as Psilopus albogularis. This is now considered to be a junior synonym of Gerygone olivacea, the white-throated gerygone, as Gerygone olivacea was listed earlier on the page in Gould's work. In 1841, Gould, in a list of birds found on the western coast of Australia, added a note in which he replaced the name Psilopus with the name Gerygone as Psilopus had been previously employed in entomology by Johann Wilhelm Meigen. The genus name Gerygone is from Ancient Greek gērugonos meaning "echoes".
      The genus contains 20 species including one which is now extinct:

      Brown gerygone, Gerygone mouki
      Grey gerygone, Gerygone igata
      Norfolk gerygone, Gerygone modesta
      † Lord Howe gerygone, Gerygone insularis – extinct (c.1930)
      Chatham Islands gerygone, Gerygone albofrontata
      Fan-tailed gerygone, Gerygone flavolateralis
      Rennell gerygone, Gerygone citrina – split from G. flavolateralis
      Brown-breasted gerygone, Gerygone ruficollis
      Golden-bellied gerygone, Gerygone sulphurea
      Rufous-sided gerygone, Gerygone dorsalis
      Mangrove gerygone, Gerygone levigaster
      Plain gerygone, Gerygone inornata
      Western gerygone, Gerygone fusca
      Dusky gerygone, Gerygone tenebrosa
      Large-billed gerygone, Gerygone magnirostris
      Biak gerygone, Gerygone hypoxantha – previous a subspecies of G. magnirostris
      Yellow-bellied gerygone, Gerygone chrysogaster
      Green-backed gerygone, Gerygone chloronota
      White-throated gerygone, Gerygone olivacea
      Fairy gerygone, Gerygone palpebrosa


      References



      Del Hoyo, J.; Elliot, A. & Christie D. (editors). (2006). Handbook of the Birds of the World. Volume 12: Picathartes to Tits and Chickadees. Lynx Edicions. ISBN 978-84-96553-42-2
      Keast, A. & Recher, H. (1997) "The adaptive zone of the genus Gerygone (Acanthizidae) as shown by morphology and feeding habits." Emu 97(1): 1-17
      Magrath, Robert. (2003). "Australian Warblers". In Perrins, Christopher (ed.). The Firefly Encyclopedia of Birds. Firefly Books. pp. 470–471. ISBN 1-55297-777-3.


      External links


      Media related to Gerygone at Wikimedia Commons

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