Gary and Audrey Revell demonstrate worm grunting to collect bait in the Apalachicola National Forest in Florida's panhandle. A second segment shows a preliminary test for earthworm responses to a burrowing mole. The container holds soil and 50 earthworms, which start coming out of the soil as the mole burrows into it. (Video is sped-up).
Posted in 'Grunting humans, moles scare earthworms' at sciencenews.org/view/generic/id/37627/title/Grunting_humans%2C_moles_scare_earthworms
Source: Catania et al.
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