"This is a very insightful effort on the part of Secretary Babbitt to protect these special places, " said Rindy O'Brien, vice president of public policy for the Wilderness Society.
CNN: Nature - Babbitt pushes land protection initiative
2.
The experiment, carried out over a period of two months, confirmed to the researchers that wing-flapping is a sign of male aggression, said Dr Rindy Anderson who led the study.