Scientists may have discovered a way to study animals without disturbing their natural behavior, according to a new study, and it involves dressing up.
Observing animals without disturbing their state of being has long been an issue, the researchers wrote in Nature Methods. So, in an effort to fix that, an international team of scientists made four-wheel rovers look like baby emperor penguins and drove them over to colonies of the animals to gauge their reactions and collect data.
The scientists implanted microchips in about 34 king penguins to monitor the animals’ heart rates when they were approached by the rovers, according to CNET. Turns out, they were slightly less stressed (and notably for shorter periods of time) when approached by the rovers than when near humans. The animals were so comfortable around the robotic penguin that adult ones sang to it and the babies huddled around it as if it were their own.
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