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Field research on White Faced Ibis

By Saline Lake Ecosystems Integrated Water Availability Assessment
Scientist gently holds captured bird against her while measuring. Headlamp lights the night time field work.
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Detailed Description

Andrea a USGS researcher measures the birds bill or "culmen". The culmen is measured from the tip of the upper mandible to the end where the culmen meets the forehead.

Sources/Usage

Public Domain.