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The family Cisticolidae is a group of about 160 warblers, small passerine birds found mainly in warmer southern regions of the Old World. 
Formerly included within the Old World warbler family Sylviidae.
The name Cisticoladae from Cisticola, which is from Ancient Greek kisthos, "rock-rose", and Latin colere, "to dwell".... cisticola).

Corydon is a genus of suboscine passerine birds in the family the Eurylaimidae of the order Passeriformes.

1/ Dusky broadbill (Mỏ rộng đen, Corydon sumatranus)

The cutias are the passerine bird genus Cutia in the family Leiothrichidae.
The name is derived from the Nepali name khatya or khutya for the type species, the Himalayan cutia (C. nipalensis).
Related to the alcippes and the laughingthrushes.

1/ Himalayan cutia (Khướu hông đỏ, Cutia nipalensis)

2/ Vietnamese cutia (Khướu hông đỏ Việt Nam, Cutia legalleni)

Cyanoderma is a genus of passerine birds in the Old World babbler family Timaliidae. 
Many of these species were formerly placed in the genus Stachyris. 
The name combines the Ancient Greek kuanos meaning "dark-blue" with derma meaning "skin".

1/ Chestnut-winged babbler (Khướu bụi bụng trắng, Cyanoderma erythropterum)

2/ Rufous-capped babbler (Khướu bụi đầu đỏ, Cyanoderma ruficeps) 

3/ Buff-chested babbler (Khướu bụi đầu hung, Cyanoderma ambiguum)

4/ Golden babbler (Khướu bụi vàng, Cyanoderma chrysaeum)
Earlier name was Stachyris chrysaea.

5/ Rufous-fronted babbler (Khướu bụt trán hung, Cyanoderma rufifrons)
Once placed in Stachyris, and Stachyridopsis

Cymbirhynchus is a genus of suboscine passerine birds in the family the Eurylaimidae of the order Passeriformes.
The generic name is from the Greek kymbe which could mean either "small boat", "head" or "an unknown bird", and rhynkhos meaning bill. 

1/ Black-and-red broadbill (Cymbirhynchus macrorhynchos) 
The specific name macrorhynchos comes from the Greek makrorrhynkhos meaning long-billed.

Delichon is a small genus of passerine birds that belongs to the swallow family and contains four species called house martins.
The name of the genus, "Delichon", is an anagram of the Ancient Greek term chelidon meaning swallow.

1/  Asian house martin (Nhạn hông trắng Á châu, Delichon dasypus)
dasypus is from Greek meaning "rough-legged".

2/ Nepal house martin (Nhạn hông trắng Nêpan, Delichon nipalense)
nipalense refers to Nepal, where the type specimen was obtained.

3/ Western house martin (Nhạn hông trắng Xibêri, Delichon urbicum), sometimes called the common house martin, northern house martin or, particularly in Europe, just house martin
The species name urbicum (urbica until 2004, due to a misunderstanding of Latin grammar) means "of the town" in Latin.

The flowerpeckers, once included in an enlarged sunbird family Nectariniidae, are a family, Dicaeidae, of passerine birds.

Dicaeidae, Dicaeum: Greek dikaion supposedly an Indian bird mentioned by Aelianus.

The buntings are a group of Old World passerine birds forming the genus Emberiza, the only genus in the family Emberizidae.

The genus Erpornis is a bird species in the family Vireonidae of the order Passeriformes.

"Vireo" is a Latin word referring to a green migratory bird; other possible meanings: green, fresh, verdant, vigorous...
Erpornis : Greek word herpo – to creep about ; ornis- bird.

1/  White-bellied erpornis (Khướu mào bụng trắng, Erpornis zantholeuca) or simply erpornis
Formerly placed in Yuhina and often still misleadingly called "white-bellied yuhina".

Erythrogenys is a genus of scimitar babblers, jungle birds with long downcurved bills.

1/  Rusty-cheeked scimitar babbler (Họa mi đất má trắng, Erythrogenys erythrogenys) 

2/ Large scimitar babbler (Họa mi đất mỏ dài, Erythrogenys hypoleucos)

The Eurylaimidae are a family of suboscine passerine birds of the order Passeriformes. The birds are found from the eastern Himalayas to Indonesia and the Philippines. The birds of the family are commonly called broadbill.

The name means 'broad throat', from the Greek eurus ('broad, wide') and laimos ('throat').

The true finches are small to medium-sized passerine birds in the family Fringillidae.
The family includes the canaries, siskins, redpolls, serins, grosbeaks and euphonias,...

Fulvetta is a genus of passerine birds in the family Paradoxornithidae of the order Passeriformes. 
The genus was recently reestablished for the typical fulvettas, which had, for long, been placed in in the Timaliidae (Old World babbler) genus Alcippe.
The species of this genus are closely related to the parrotbills.

1/ Grey-hooded fulvetta (Lách tách mũ xám, Fulvetta cinereiceps)

2/ White-browed fulvetta (Lách tách mày trắng, Fulvetta vinipectus)

3/ Spectacled fulvetta (Lách tách ngực nâu, Lách tách bốn mắt, Fulvetta ruficapilla)

4/ Rufous-throated fulvetta (Schoeniparus rufogularis)
Lách tách họng hung

Gampsorhynchus is a genus of birds in the family Pellorneidae.

Gampsorhynchus Greek: gampsos γαμψός curved, bent, crooked; rhunkhos bill.

1/  White-hooded babbler (Khướu đuôi dài, Gampsorhynchus rufulus)

2/ Collared babbler (Gampsorhynchus torquatus)

Garrulax is a genus of passerine birds in the laughingthrush family Leiothrichidae.

1/ Chinese hwamei or melodious laughingthrush (Họa mi, Garrulax canorus)
The name "hwamei" comes from its Chinese name which means "painted eyebrow", referring to the distinctive marking around the bird's eyes. 
The specific epithet is Latin meaning "melodious" (from canere "to sing").

2/ Black-hooded laughingthrush (Khướu đầu đen, Garrulax milleti)

3/ White-crested laughingthrush (Khướu đầu trắng, Garrulax leucolophus)
The scientific name Garrulax leucolophus comes from Latin garrire "to chatter", in reference to its very vocal nature, and from Greek leukos "white" and lophos "crest".

4/ Lesser necklaced laughingthrush (Khướu khoang cổ, Garrulax monileger)

5/ Grey laughingthrush (Khướu xám, Garrulax maesi)

6/ Orange-breasted laughingthrush (Garrulax annamensis)
Khướu ngực hồng

Gypsophila is a genus of birds in the family Pellorneidae.

Pellorneum, Pellorneidae: combines the Ancient Greek pellos meaning "dark-coloured" with orneon meaning "bird".
Gypsophila :Greek gupsos chalk, gypsum; philos fond of.

1/ Streaked wren-babbler (Khướu đá đuôi ngắn, Gypsophila brevicaudata)
Earlier Napothera brevicaudata

2/ Annam limestone babbler (khướu đá hoa, Gypsophila annamensis)
native to the limestone hills of northern Indochina.

Limestone wren-babbler has been split into three species:
- Annam limestone babbler, Gypsophila annamensis
- Rufous limestone babbler, Gypsophila calcicola
- Variable limestone babbler, Gypsophila crispifrons

3/ Streaked Wren-babbler (Gypsophila brevicaudata) 

Heterophasia, the sibias, is a bird genus in the family Leiothrichidae of the order Passeriformes.

1/ Black-headed sibia (Mi đầu đen, Heterophasia desgodinsi)

2/ Dark-backed sibia (Mi lưng đen, Heterophasia melanoleuca)

3/ Long-tailed sibia (Mi đuôi dài, Heterophasia picaoides)

Ianthocincla is a genus of passerine birds in the family Leiothrichidae.
The name of the genus combines the Ancient Greek ionthos "young hair" or "down" with the Neo-Latin cinclus "thrush".
Previously assigned to the genus Garrulax.

1/ Rufous-chinned laughingthrush (Khướu cằm hung, Ianthocincla rufogularis)

2/ Chestnut-eared laughingthrush (Khướu Kon Ka Kinh, Ianthocincla konkakinhensis)
originally placed in the genus Garrulax.

The genus Kurochkinegramma is a genus of the sunbird family Nectariniidae. The genus contains only one species: The purple-naped spiderhunter or purple-naped sunbird (Kurochkinegramma hypogrammicum).

1/ Purple-naped spiderhunter or purple-naped sunbird (Hút mật bụng vạch, Kurochkinegramma hypogrammicum)
formerly placed in the genus Hypogramma.

Laniellus is a genus of passerine birds in the family Leiothrichidae of the order Passeriformes.
formerly placed in the genus Crocias.

Ancient Greek κροκίας (krokías, “a saffron-colored stone”)

1/ Grey-crowned crocias (Mi Núi Bà, Laniellus langbianis)
endemic to Vietnam.