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Mariana Swiftlet Roosts at Night

By Pacific Islands Water Science Center
Near infrared camera shows dozens of Mariana swiftlets roosting on the overhanging ceiling of a cave in Guam.
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Detailed Description

Near infrared light camera shows dozens of swiftlets roosting at night. Near infrared (NIR) light is the wavelengths nearest to, but just past what is visible to the human eye on the electromagnetic spectrum. Swiftlets use their cement like saliva that hardens in air to create and attach shallow nests to limestone cave ceilings. PC: E. Paxton, 2021.

Sources/Usage

Public Domain.

Photo provided by USGS scientist Paxton Eben.