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Although huddling was shown to be the key by which emperor penguins (Aptenodytes forsteri) save energy and sustain their breeding fast during the Antarctic winter, the intricacies of this social behavior have been poorly studied. We recorded abiotic variables with data loggers glued to the feathers of eight individually marked emperor penguins to investigate their thermoregulatory behavior and to...
While measurement of electrical conductivity provides one way of estimating body composition in live animals, the accuracy of methods based on this principle requires further study. In this work, we evaluate the effect of the ambient conditions and sample geometry on the response given by an SA-2 model (EM-SCAN) apparatus as well as the reproducibility of the measurements over time. A 2 °C variation...
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