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Listening in on the Mysterious Marbled Murrelet
Applying machine learning to forest soundscapes helps researchers pinpoint rare and threatened birds.
On land, it lays its eggs high in the mossy branches of the Pacific Northwest’s old-growth forests—a fact only serendipitously discovered by a utility-company employee climbing trees in the 1970s. To try to monitor populations, researchers have donned drysuits to attach radio transmitters to the birds and have flown small airplanes to search for nests—efforts that are expensive and imprecise. This kind of data will allow for more precise conservation actions, including pausing forestry operations or removing predators, such as barred owls, in key areas.
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