Thermal images provide insight into how zoo animals blow hot and cold

While the warm parts of the marmosets’ bodies show up as red or yellow, the tails, which retain little warmth, appear green. The imaging technique has helped zookeepers to home in on the different tactics zoo animals use to conserve energy. Other pictures taken by Steve Lowe, an amateur photographer, show that the tips of a bird-eating spider’s eight legs were its coolest part and the only warm part of a pelican was its head. The thermal images also showed how the sacred ibis and flamingoes were able to shut off the blood supply to one leg.

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