Mariana Swiftlet (Aerodramus bartschi)
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Mariana Swiftlet

Aerodramus bartschi (Mearns, 1909)

11 cmLength7.4 gWeight

The Mariana swiftlet or Guam swiftlet (Aerodramus bartschi) is a species of swiftlet in the family Apodidae.

Most records: Northern Mariana Islands, Guam

Vulnerable

Where and when it's recorded

Most records: Northern Mariana Islands, Guam

Mariana Swiftlet has been recorded at 4 of the 8,276 birding hotspots we track, in 2 countries and regions.

Records by month Northern Hemisphere

Where it's recorded most

  1. American Memorial ParkNorthern Mariana Islands15 records
  2. WW II MemorialsNorthern Mariana Islands8 records
  3. South end of GuamGuam4 records
More places
  1. Puerto Rico mudflatsNorthern Mariana Islands1 record

Countries and regions with the most records

Northern Mariana IslandsGuam

eBird records via GBIF up to 2024-12-31. A record means someone listed it; more records partly mean more birders, not more birds.

About

The Mariana swiftlet or Guam swiftlet (Aerodramus bartschi) is a species of swiftlet in the family Apodidae.

Excerpt from Wikipedia, CC BY-SA 4.0 · authors · Read more on Wikipedia

Questions

How big is the Mariana Swiftlet?

The Mariana Swiftlet is about 11 cm long and weighs around 7.4 g.

Where does the Mariana Swiftlet live?

Its breeding range: Pacific Ocean: Saipan, Aguijan; extinct Rota and Tinian (southern Northern Mariana Islands, western Micronesia). It is most often recorded in Northern Mariana Islands and Guam.

Is the Mariana Swiftlet endangered?

The IUCN Red List classifies the Mariana Swiftlet as Vulnerable.

What does the Mariana Swiftlet eat?

Main food: Insects & other invertebrates.

What family is the Mariana Swiftlet in?

It belongs to the family Swifts (Apodidae), order Apodiformes.

At a glance

Length
11 cm
Weight
7.4 g
Habitat
Forest
Diet
Insects & other invertebrates
Lifestyle
Feeds in the air
Migration
Resident (barely migrates)
Conservation
Vulnerable
More measurements
Wing
89 mm
Tail
41 mm
Bill
5 mm
Tarsus
8 mm

Averages from the AVONET dataset; length from field guides where available.

Range

Pacific Ocean: Saipan, Aguijan; extinct Rota and Tinian (southern Northern Mariana Islands, western Micronesia)

Breeding range, IOC World Bird List 15.2

Classification

Family
Swifts Apodidae
Genus
Aerodramus

Other birds in the genus Aerodramus

Seychelles SwiftletSeychelles SwiftletAerodramus elaphrusMascarene SwiftletMascarene SwiftletAerodramus francicusIndian SwiftletIndian SwiftletAerodramus unicolorPhilippine SwiftletPhilippine SwiftletAerodramus mearnsiMoluccan SwiftletMoluccan SwiftletAerodramus infuscatusMountain SwiftletMountain SwiftletAerodramus hirundinaceusWhite-rumped SwiftletWhite-rumped SwiftletAerodramus spodiopygiusAustralian SwiftletAustralian SwiftletAerodramus terraereginaeHimalayan SwiftletHimalayan SwiftletAerodramus brevirostrisVolcano SwiftletVolcano SwiftletAerodramus vulcanorumWhitehead's SwiftletWhitehead's SwiftletAerodramus whiteheadiBare-legged SwiftletBare-legged SwiftletAerodramus nuditarsus
Mariana Swiftlet

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