Agricultural and Biological Sciences · Ecology, Evolution, Behavior and Systematics
Japanese bent-winged bats adjusted their echolocation frequencies in response to sounds that could interfere with their calls. A mathematical model and a two-dimensional group simulation indicate that this self-organized behavior can reduce potential misdetections across a flying group.
A new analysis combining chromosome-level genomes from 103 bat species with fossils revises relationships among bat families. It indicates that bats, and therefore powered flight, probably originated in Europe in the late Palaeocene, while laryngeal echolocation predates the diversification of modern bats.
Researchers report the first documented case of a humpback whale attending to a stillborn calf after its death. The female stayed close, repeatedly interacted with the calf and did not try to lift it to the surface.
Researchers confirmed two bat species on Flores Island in the Azores, including Nyctalus azoreum, which had not previously been recorded there. Acoustic monitoring found that Pipistrellus maderensis was widespread, while N. azoreum was detected at only a few sites and showed very low activity.
