There are differentiation between Aerodramus and Collocalia genera (genus). The use of echolocation was once used to
separate Aerodramus from
the non-echolocating genera Collocalia .
Entrance Hole ( Lubang Masuk Burung )
There are two concepts of entrance hole for swiftlets to enter into bird house, Window and open roof.Open Roof and window concept has been refer to these types of Entrance hole from the cave.
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| Window concept |
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| Open Roof Concept |
1. Aerodramus fuciphagus ( White-nest swiftlet or Burung walet )
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| White-nest swiftlet |
2. Aerodramus miximus....Black-nest swiftlet )
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| Aerodramus miximus ( Black-nest swiftlet ) |
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| Black Nest swiftlet - This species can echolocate |
3.Aerodramus salangana ( Mossy swiftlet )
Aerodramus salangana ( Mossy swiftlet )
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| Mossy Swiftlet This species can echolocate |
4. Aerodramus germani.... Germain Swiftlet
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| Aerodramus germani ( Germain Swiftlet ) |
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| Germain swiftlet similar to Edible-nest Swiftlet |
5. Collocalia esculenta ..White-Bellied swiftlet..Glossy swiftlet or Seriti. This type of species easily found in Cameron Highlands Malaysia.
White -bellied swiftlet
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| White -bellied swiftlet in the cave This species does not echolocate _Colonies Collocalia_esculenta at the wall of house  Glossy swiftlet  Glossy swiftlet  Glossy swiftlet |
