Thai National Parks

Birds of Thailand

Species of Thailand

Thick-billed warbler

Thai: นกพงปากหนา

Binomial name: Arundinax aedon, Peter Simon Pallas, 1776

The thick-billed warbler (Iduna aedon) is an Old World warbler that breeds in temperate east Asia. It is migratory, wintering in tropical south east Asia. It is a very rare vagrant to western Europe.

This passerine bird is a species found in dense vegetation such as reeds, bushes and thick undergrowth. 5-6 eggs are laid in a nest in a low tree.

This is a large warbler, at 16 - 17.5 cm long nearly as big as great reed warbler. The adult has an unstreaked brown back and buff underparts, with few obvious distinctive plumage features. The forehead is rounded, and the bill is short and pointed. The sexes are identical, as with most warblers, but young birds are richer buff below. Like most warblers, it is insectivorous, but will take other small prey items.

The song is fast and loud, and similar to marsh warbler, with much mimicry and typically acrocephaline whistles added.

It was sometimes placed in the monotypic genus Phragmaticola (or Phragamaticola) and for a long time as Acrocephalus and in 2009 found to belong to the Iduna clade.

Keyserling and Blasius gave no explanation of the genus name Iduna. The specific aedon is from Latin aëdon or Ancient Greek aedon and means nightingale. In Greek mythology Aëdon was changed into a nightingale after killing her own son while attempting to murder one of the sons of her sister Niobe.

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Scientific classification

Kingdom
Animalia
Phylum
Chordata
Class
Aves
Order
Passeriformes
Family
Acrocephalidae
Genus
Arundinax
Species
Arundinax aedon

Common names

  • Thai: นกพงปากหนา

Subspecies

  • Arundinax aedon rufescens, Boris K. Stegmann, 1929

  • Arundinax aedon rufescens, Watson, 1985

Synonyms

  • Acrocephalus aedon, Peter Simon Pallas (1776)
  • Phragmaticola aedon, Peter Simon Pallas (1776)
  • Iduna aedon, Peter Simon Pallas (1776)

Conservation status

Least Concern (IUCN3.1)

Least Concern (IUCN3.1)

No photo for this species yet

Distribution map of Thick-billed warbler, Arundinax aedon in Thailand
  • Amphawa District, Samut Songkhram
  • Ban Laem District, Phetchaburi
  • Ban Lat District, Phetchaburi
  • Ban Phai District, Khon Kaen
  • Bang Len District, Nakhon Pathom
  • Bang Phra Non-hunting Area
  • Bang Pu Recreation Centre
  • Bangkok Province
  • Borabue District, Maha Sarakham
  • Bueng Boraped Non-hunting Area
  • Bueng Khong Long Non-hunting Area
  • Chae Hom District, Lampang
  • Chatturat District, Chaiyaphum
  • Chiang Dao District, Chiang Mai
  • Chiang Dao Wildlife Sanctuary
  • Chiang Khong District, Chiang Rai
  • Chiang Saen District, Chiang Rai
  • Doi Inthanon National Park
  • Doi Lo District, Chiang Mai
  • Doi Pha Hom Pok National Park
  • Doi Suthep-Pui National Park
  • Doi Tao District, Chiang Mai
  • Fang District, Chiang Mai
  • Hang Chat District, Lampang
  • Huai Chorakhe Mak Reservoir Non-hunting Area
  • Huai Kha Khaeng Wildlife Sanctuary
  • In Buri District, Sing Buri
  • Kaeng Khoi District, Saraburi
  • Kaeng Krachan District, Phetchaburi
  • Kaeng Krachan National Park
  • Kamphaeng Saen District, Nakhon Pathom
  • Kanthararom District, Sisaket
  • Kantharawichai District, Maha Sarakham
  • Kaset Sombun District, Chaiyaphum
  • Khao Ang Rue Nai Wildlife Sanctuary
  • Khao Khiao - Khao Chomphu Wildlife Sanctuary
  • Khao Laem National Park
  • Khao Lak - Lam Ru National Park
  • Khao Sam Roi Yot National Park
  • Khao Soi Dao Wildlife Sanctuary
  • Khao Sok National Park
  • Khao Yai National Park
  • Khao Yoi District, Phetchaburi
  • Khlong Luang District, Pathum Thani
  • Khun Tan District, Chiang Rai
  • Klaeng District, Rayong
  • Ko Libong
  • Kui Buri National Park
  • Kumphawapi District, Udon Thani
  • La-ngu District, Satun
  • Laem Pak Bia
  • Mae Ai District, Chiang Mai
  • Mae Ping National Park
  • Mae Rim District, Chiang Mai
  • Mae Sot District, Tak
  • Mae Taeng District, Chiang Mai
  • Mae Tha, Lampang District, Lampang
  • Mae Wong National Park
  • Mueang Buriram District, Buriram
  • Mueang Chaiyaphum District, Chaiyaphum
  • Mueang Chiang Mai District, Chiang Mai
  • Mueang Chiang Rai District, Chiang Rai
  • Mueang Chonburi District, Chonburi
  • Mueang Kanchanaburi District, Kanchanaburi
  • Mueang Khon Kaen District, Khon Kaen
  • Mueang Lampang District, Lampang
  • Mueang Maha Sarakham District, Maha Sarakham
  • Mueang Nakhon Nayok District, Nakhon Nayok
  • Mueang Nan District, Nan
  • Mueang Nong Khai District, Nong Khai
  • Mueang Phetchaburi District, Phetchaburi
  • Mueang Ratchaburi District, Ratchaburi
  • Mueang Samut Sakhon District, Samut Sakhon
  • Mueang Sukhothai District, Sukhothai
  • Mueang Suphanburi District, Suphan Buri
  • Mueang Tak District, Tak
  • Mueang Uttaradit District, Uttaradit
  • Nam Nao National Park
  • Nong Bong Khai Non-hunting Area
  • Nong Ya Plong District, Phetchaburi
  • Pa Sang District, Lamphun
  • Pak Chong District, Nakhon Ratchasima
  • Pak Phli District, Nakhon Nayok
  • Pak Thale
  • Pang Sila Thong District, Kamphaeng Phet
  • Pha Daeng National Park
  • Phanat Nikhom District, Chonburi
  • Phra Nakhon Si Ayutthaya District, Phra Nakhon Si Ayutthaya
  • Phu Chi Fa Forest Park
  • Phu Hin Rong Kla National Park
  • Pran Buri District, Prachuap Khiri Khan
  • Pran Buri Forest Park
  • Sai Noi District, Nonthaburi
  • Sai Yok District, Kanchanaburi
  • Samut Prakan Province
  • San Sai District, Chiang Mai
  • Taksin Maharat National Park
  • Takua Pa District, Phang Nga
  • Taphan Hin District, Phichit
  • Tha Takiap District, Chachoengsao
  • Thalang District, Phuket
  • Thanyaburi District, Pathum Thani
  • Thap Lan National Park
  • Thawat Buri District, Roi Et
  • Thung Yai Naresuan Wildlife Sanctuary
  • Wang Noi District, Phra Nakhon Si Ayutthaya
  • Wiang Kaen District, Chiang Rai

Range map of Arundinax aedon in Thailand

Important note; our range maps are based on limited data we have collected. The data is not necessarily accurate or complete.

Special thanks to Ton Smits, Parinya Pawangkhanant, Ian Dugdale and many others for their contribution for range data.

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