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Dolphins keep lifelong social memories, longest in a non-human species

Dolphins can recognize their old tank mates’ whistles after being separated for more than 20 years—the longest social memory ever recorded for a non-human species.

The remarkable memory feat is another indication that dolphins have a level of cognitive sophistication comparable to only a few other species, including humans, chimpanzees and elephants. Dolphins’ talent for social recognition may be even more long-lasting than facial recognition among humans, since human faces change over time, but the signature whistle that identifies a dolphin remains stable over many decades. (more…)

The Original Twitter? Tiny Electronic Tags Monitor Birds’ Social Networks

By Guest PostSeptember 24, 2012Nature, Sciencearchipelago, bird, brian otis, broadcast, costa rica, crow, drexel university, ecology, encounternet, forest, frequency, galapagos islands, german, internet, islands, john burt, lysanne snijders, Netherlands, new caledonia, radio tracking, radio transmitter, scotland, social behavior, social mobility, social network, South Pacific, st andrews, Technology, university, Washington, wireless sensor, woodland bird

If two birds meet deep in the forest, does anybody hear? Until now, nobody did, unless an intrepid biologist was hiding underneath a bush and watching their behavior, or the birds happened to meet near a research monitoring station. But an electronic tag designed at the University of Washington can for the first time see when birds meet in the wild.

A new study led by a biologist at Scotland’s University of St. Andrews used the UW tags to see whether crows might learn to use tools from one another. The findings, published last week in Current Biology, supported the theory by showing an unexpected amount of social mobility, with the crows often spending time near birds outside their immediate family. (more…)

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Dolphins keep lifelong social memories, longest in a non-human species

The Original Twitter? Tiny Electronic Tags Monitor Birds’ Social Networks