HILO, Hawaii (AP) - Researchers studying Hawaii's last remaining native crow species say the sound of the alala has changed since being in captivity.
The Hawaii Tribune-Herald reports that Ann Tanimoto, a University of Hawaii graduate, spent months studying alalas that have been held in an aviary. She found that wild alalas have higher call rates and produce more alarm and territorial calls than their captive counterparts.
Tanimoto's research was part of a years-long university project on climate change, which has been awarded $1 million annually since at least 2009. The grant is provided by the Centers for Research Excellence in Science and Technology program at the National Science Foundation.
As part of the project, another student is currently studying the Hawaiian honeycreeper, another native bird.